Oswald Avery

Oswald Avery's grandfather was Joseph Henry Avery.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=49 |language=English}} He was a papermaker, and he was in charge of the papermaking at Oxford University. He discovered a way to make thin paper that could be printed on both sides. This paper was used to make Oxford Bibles.

Avery's father, Joseph Francis Avery, born in 1846 in Norwich, Norfolk, became a Baptist minister after coming under the influence of C. H. Spurgeon, a Baptist Evangelist. He married his wife, Elizabeth Crowdy, in 1870, and spent three years in England, where he would continue his pastoral service as a Baptist. After this, he would move to Halifax, Nova Scotia with his wife, against the wishes of his friends, believing it to be the Will of God. He remained as a pastor for 14 years in Halifax before traveling to the Mariner's Temple in New York City, where he would preach to a rowdy and poverty-stricken crowd.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=50 |language=English}} While here, he would publish an edifying pamphlet entitled "The Voyage of Life", edited the church publication Buds and Blossoms, and patented and attempted to sell a preparation known as "Avery's Auraline", though it would gain little success.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=51 |language=English}} When their home burned to the ground in December 1890, the Baptist community of New York banded together to help pay for the expenses, including one John D. Rockefeller. He would die in 1892, leaving his wife Elizabeth Avery a widow.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=52 |language=English}}

Avery's mother, Elizabeth Crowdy, was the beating heart and soul that made her husband's church the community center it was.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=53 |language=English}} After Joseph Francis Avery's death, she would continue editing the publication Buds and Blossoms. She would also continue to work with the Baptist City Mission Society, where she would come into association with a number of wealthy people, including the Sloans, the Vanderbilts, and the Rockefellers.

Oswald had two siblings - an older brother Ernest and a younger brother Roy. Ernest was a gifted child, but became ill at a young age. Roy followed his brother Oswald in the field of bacteriology. He eventually taught at Vanderbilt Medical School in Nashville, Tennessee.

Oswald Avery was born in Halifax, Nova Scotia, in 1877 to Francis Joseph Avery, a Baptist minister, and his wife Elizabeth Crowdy. The couple had immigrated from Britain in 1873. Oswald Avery was born and grew up in a small wooden row house on Moran Street in the North End of Halifax, now a designated heritage building.[http://www.historicplaces.ca/en/rep-reg/place-lieu.aspx?id=3849&pid=0 "Avery House", Canada's Historic Places] When Avery was 10, his family moved to the Lower East Side of New York City. Oswald Avery began participating in church activities at a young age.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=54 |language=English}} He and his older brother Ernest learned how to play the cornet from a German musician who played at church. Soon, both were playing at church themselves. The brothers played on the steps of Mariners' Temple to attract worshippers.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=54–55 |language=English}} Both earned a scholarship to the National Conservatory of Music. Ernest became sick and did not continue, but Oswald pushed onward. He became talented enough to play with the National Academy of Music in Antonin Dvorak's Symphony No. 5, From the New World, under direction of Walter Damrosch.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=55 |language=English}}

Oswald Avery began at Colgate University in 1896. Even though Colgate was a Baptist school, there were signs of rebellion against orthodoxy during Avery's time at the university. In Avery's senior year, he and a few of his classmates asked their philosophy professor to create a metaphysics class that would allow them to explore the credibility of the Christian faith.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=55–56 |language=English}} Avery's senior year was entirely electives, but he did not choose to take a single science elective, even though many were offered.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=57 |language=English}} Avery made exceptional grades throughout his years at Colgate. He received 8.5 out of 10 or above in all courses his freshman year and 9 out of 10 or above his sophomore through senior year. Avery's top grades were in his public speaking courses, in which he never received lower than a 9.5. He even tied for first with his friend Emerson in an oratorical contest. Avery earned his undergraduate degree in humanities at Colgate University and was a member of the Class of 1900.{{Cite web|date=2020-01-31|title=Gene Idol {{!}} Colgate Magazine|url=https://news.colgate.edu/magazine/2020/01/31/gene-idol/|access-date=2020-06-29|language=en-US}}

Oswald Avery began medical studies at The College of Physicians and Surgeons at Columbia University in New York later in the year of 1900. At the college, he made good grades in all of his courses, except bacteriology and pathology.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=58 |language=English}} He graduated with a medical degree in 1904, and then he began to practice general medicine.'{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=59 |language=English}} Avery did not like dealing with patients who have chronic diseases that he was unable to fix. He practiced medicine until 1907 when he began working as an associate director to Benjamin White in Hoagland Laboratory.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=59–60 |language=English}}

At Hoagland Laboratory, he began by studying the bacteriology of yogurt and other fermented milk products and their effects on gut bacteria.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=60–61 |language=English}} He recorded his findings in "Observations on Certain Lactic Acid Bacteria of the Bulgaricus Type".{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=61 |language=English}} During the years 1909 through 1913, he performed medical research with bacteriological, immunological, and chemical approaches.

For a period of time, White came down with tuberculosis. Avery went with him to Trudea Sanatorium for a cure. Afterwards, Avery went back to take vacations at the sanatorium. He became interested in tuberculosis and began doing research in the Trudea Laboratory, where he looked at the clinical and experimental aspects of tuberculosis. Here he carried out 100 consecutive blood cultures of tuberculosis patients in the active phase of the disease. He never found evidence of secondary infection. His careful clinical investigation caught the eye of Dr. Rufus Cole at Rockefeller Institute.

At Hoagland, Avery performed a chemical and toxicological study of a product derived from tubercle bacilli.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=62 |language=English}} With White as a colleague, he extracted the product with alkaline ethanol. The research was published in 1912. This further showed his systematic effort to observe and analyze bacterial activity using their chemical structure. In 1911, Avery instructed staff of H. K. Mulford Company in bacteriological techniques, and they taught him the industrial methods for production of antitoxins and vaccines.

Throughout his time at Hoagland, Avery published nine papers, one of which was a chapter on "Opsonins and Vaccine Therapy". He collaborated with Dr. N. B. Potter for this chapter, which was put in Hare's Modern Treatment - a popular medical magazine at the time. Avery also taught a course to student nurses at Hoagland. During the course, he conveyed the dangers of pathogens spread through sneezing. During his teaching, he was given the nicknames "The Professor" and "Fess". While working at Hoagland, Avery was mailed two written offers from Rockefeller Institute, and he denied them both.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=63 |language=English}} Avery did not accept the offer until Rufus Cole from Rockefeller came to offer the position to him in person.

Oswald Avery entered Rockefeller Institute as Assistant in 1913, and in 1915, he became an Associate. In 1919, Avery was promoted to an associate member. He was granted full membership in 1923. At the institute, Cole, Avery and Alphonse Dochez developed the first effective immune serum against a strain of pneumococcus, a bacterium causing pneumonia. The serum was produced from the blood of infected horses.{{Cite book|last=Barry|first=John M.|url=https://books.google.com/books?id=BYsW6qTP0pMC&q=the+great+influenza|title=The Great Influenza: The Epic Story of the Deadliest Plague in History|date=2005|publisher=Penguin|isbn=978-0-14-303649-4|language=en|pages=181–189}}

Research showed that various pneumonia cultures isolated from different patients had different immunological properties.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=101 |language=English}} This made it difficult to develop a serum effective against all of the different strains. Four main groups of pneumococcus had been discovered - type I, type II, type III, and type IV.{{Cite journal |last1=Avery |first1=Oswald T. |last2=MacLeod |first2=Colin M. |last3=McCarty |first3=Maclyn |title=Studies on the Chemical Nature of the Substance Inducing Transformation of Pneumococcal Types |date=1944-02-01 |journal=The Journal of Experimental Medicine |volume=79 |issue=2 |pages=137–158 |doi=10.1084/jem.79.2.137 |issn=0022-1007 |pmc=2135445 |pmid=19871359}} Avery investigated distribution of different pneumococcus types in healthy individuals versus individuals with symptoms of pneumonia.{{Cite book |last=Amsterdamska |first=Olga |title=Medicine and Change: Historical and Sociological Studies of Medical Innovation |publisher=John Libbey Eurotext |year=1993 |isbn=2742000100 |editor-last=Löwy |editor-first=Ilana |pages=186 |language=English |chapter=Between Medicine and Science: The Research Career of Oswald T. Avery}} Avery found different subgroups of type II pneumococcus. These groups were similar to the type strain in certain aspects. However, the subgroups of type II had similarities amongst each other that they did not share with the other main groups of pneumococcus. Avery wrote about the results of his findings in a 1915 paper called "Varieties of Pneumococcus and Their Relation to Lobar Pneumonia". In the paper, he argued that people who appeared to be healthy could be carriers of pneumonia Avery also suggested it was important to identify the type of strain, based on agglutination of the pneumococci, when determining the appropriate serum for the patient. Avery suggested pneumococci strains that produced more severe symptoms had higher virulence than strains that cause less severe symptoms. A serum effective against type II pneumonia was developed.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=102 |language=English}} Avery tested the serum in horses. He processed the serum and measured its antipneumococcal activity. Avery concentrated the serum so that a minimal amount of foreign protein was needed in it. Avery wrote the monograph, Acute Lobar Pneumonia: Prevention and Serum Treatment, that was published by The Institute explaining this improvement.

Avery also helped Dochez in his research on specific soluble substances found in the blood and urine of pneumonia patients.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=103 |language=English}} The presence of specific soluble substances in a urine sample allowed him to rapidly test the type of pneumonia without having to wait for a culture to grow.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=104 |language=English}} Avery and Heidelberger realized that the capsules of different strains of pneumonia had different polysaccharide structures and concluded that polysaccharides play a role in immunological specificity.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=106 |language=English}} Their work with specific soluble substances showed that it is important to consider the factor in the chemical composition of organisms to design anti-serums. Avery published papers on specific soluble substance findings between 1923 and 1929, along with an additional paper he published with Goebel in 1933.{{Cite book |last=Amsterdamska |first=Olga |title=Medicine and Change: Historical and Sociological Studies of Medical Innovation |publisher=John Libbey Eurotext |year=1993 |isbn=2742000100 |editor-last=Löwy |editor-first=Ilana |pages=192 |language=English |chapter=Between Medicine and Science: The Research Career of Oswald T. Avery}} He worked with Goebel until 1934, and then Gobel continued their work upon his cessation. Later, Avery concluded that a protein determines the specificity of Diplococcus pneumoniae after he observed that the active protein was the same for all pneumococcal strains but different than that of other bacteria.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=111 |language=English}}

Avery became an emeritus member of The Institute when he retired in 1943. However, he continued to work in the lab until 1948.

At the height of the 1918 influenza epidemic, the dominant hypothesis was that the causative agent in the disease was a bacterium — specifically, Haemophilus influenzae (then called 'Pfeiffer's bacillus' or Bacillus influenzae),

a microbe first isolated by German bacteriologist Richard Pfeiffer, which he had identified in nasal samples of patients infected by seasonal influenza decades earlier and which was also found in many but not all samples taken from patients in the 1918 epidemic.{{cite journal |last1=Van Epps |first1=HL |title=Influenza: exposing the true killer |journal=Journal of Experimental Medicine |date=April 17, 2006 |volume=203 |issue=4 |page=803 |doi=10.1084/jem.2034fta |pmid=16685764 |url=https://rupress.org/jem/article/203/4/803/46424/Influenza-exposing-the-true-killer |access-date=7 May 2020 |pmc=2118275}} The failure to isolate B. influenzae in some patients was generally attributed to the difficulty of culturing the bacterium.

Peter Olitsky and Frederick Gates at the Rockefeller Institute found that nasal secretions from infected patients could still cause disease in the lungs of rabbits after having been filtered through a bacterium-excluding Berkefeld filter, but other researchers were unable to reproduce their results. Avery initially doubted Olitsky's and Gates's data, and set out to prove the B. influenzae hypothesis. For that purpose, he developed improved culture media for B. influenzae, which were widely adopted and reduced the possibility of false negatives. However, B. influenzae could still not be found in all influenza patients. The true cause of influenza, a virus, would not be discovered until the 1930s.{{cite journal |vauthors=Taubenberger JK, Hultin JV, Morens DM |year=2007 |title=Discovery and characterization of the 1918 pandemic influenza virus in historical context |journal=Antiviral Therapy |volume=12 |issue=4 Pt B |pages=581–591 |doi=10.1177/135965350701200S02.1 |pmc=2391305 |pmid=17944266}}

{{Single strand DNA discovery}}

{{main|Avery–MacLeod–McCarty experiment}}

After the influenza epidemic, Avery returned to his work on pneumococcus. He identified R and S strains of the bacterium; the latter caused disease and had a polysaccharide capsule, while the former lacked the capsule and was harmless. Griffith's experiment of 1928 showed that the ability to produce a capsule could be transferred from S to R strain bacteria, even if the S strain bacteria were killed first.

For many years, genetic information was thought to be contained in cell protein. Continuing the research done by Frederick Griffith, Avery worked with Colin MacLeod and Maclyn McCarty on the mystery of inheritance. He had received emeritus status from the Rockefeller Institute in 1943, but continued working for five years, though by that time he was in his late sixties. In 1944 at the Rockefeller Institute's Hospital for medical research, Oswald Avery, along with Colin MacLeod and Maclyn McCarty, isolated S-strain bacteria and killed them with heat.{{Cite web |title=Animation 17: A gene is made of DNA. :: CSHL DNA Learning Center |url=https://dnalc.cshl.edu/view/16375-Animation-17-A-gene-is-made-of-DNA-.html |access-date=2023-05-01 |website=dnalc.cshl.edu}} They used available techniques to remove various macromolecules - proteins, RNA, and DNA - from the bacteria. Then, the killed S-strain bacteria, with various substances removed, were placed with live R-strain bacteria. Avery hypothesized that if the live R-strain bacteria did not transform into S-strain bacteria, then the missing substance contained genetic information and was the "transforming principle". Proteins were removed with protease enzymes and upon transfer of S-strain bacteria into R-strain, the R-strain transformed into S-strain. Therefore, proteins were not the "transforming principle". Next, the S-strain bacteria were treated with ribonucleases to degrade their RNA, and the remainder of the S-strain was placed with the live R-strain bacteria.{{Cite book |last1=Parker |first1=Nina |title=Microbiology |last2=Schneegurt |first2=Mark |last3=Thi Tu |first3=Anh-Hue |last4=Forster |first4=Brian M. |last5=Lister |first5=Philip |publisher=ASM Press |year=2018 |isbn=978-1-50669-811-3 |location=Rice University |chapter=Biochemistry of the Genome}} The R-strain still transformed into S-strain, suggesting that RNA was not the transforming substance. Finally, the S-strain bacteria were treated with a deoxyribonuclease enzymes, which removed the DNA, and the S-strain bacteria were placed with the live R-strain bacteria. After this treatment, the R-strain bacteria did not transform into S-strain bacteria. The lack of transformation suggested that DNA was the substance that transformed R-strain into S-strain bacteria and indicated that it was the carrier of genetic information in cells.{{cite journal|last1=Avery|first1=Oswald T.|last2=MacLeod|first2=Colin M.|last3=McCarty|first3=Maclyn|title=Studies on the Chemical Nature of the Substance Inducing Transformation of Pneumococcal Types - Induction of Transformation by a Desoxyribonucleic Acid Fraction Isolated from Pneumococcus Type III|journal=Journal of Experimental Medicine|date=February 1, 1944|volume=79|issue=2|pages=137–158|pmid=19871359|pmc=2135445|doi=10.1084/jem.79.2.137}}{{cite journal |doi=10.1038/nature01398|title=Discovering genes are made of DNA|year=2003|last1=McCarty|first1=Maclyn|journal=Nature|volume=421|issue=6921|page=406|pmid=12540908|bibcode=2003Natur.421..406M|s2cid=4335285|doi-access=free}}

Avery's conclusion, that "The evidence presented supports the belief that a nucleic acid of the desoxyribose type is the fundamental unit of the transforming principle of Pneumococcus Type III" greatly influenced Erwin Chargaff, who upon reading those words dedicated his work to identify a "chemistry of heredity" which he later elucidated in Chargaff's rules. Chargaff would later comment that "As this transformation represents a permanently inheritable alteration of a cell, the chemical nature of the substance responsible for this alteration had been elucidated for the first time. Seldom has more been said in so few words."{{cite journal |last1=Weintraub |first1=Bob |title=Erwin Chargaff and Chargaff's Rules |journal=Chemistry in Israel - Bulletin of the Israel Chemical Society |date=September 2006 |issue=22 |pages=29–31 |url=https://drive.goo-gle.com/file/d/13dBvbCTMVmko67B7GZGH7ck_HwIVmJ_2-rT7MbU_dqQUGQz6YeRpb-rY1ucz/edit?usp=sharing}}

Alfred Hershey and Martha Chase furthered Avery's research in 1952 with the Hershey–Chase experiment. These experiments paved the way for Watson and Crick's discovery of the helical structure of DNA, and thus the birth of modern genetics and molecular biology. Of this event, Avery wrote in a letter to his youngest brother Roy, a bacteriologist at the Vanderbilt School of Medicine: "It's lots of fun to blow bubbles but it's wiser to prick them yourself before someone else tries to."Davies, Kevin (2001). Cracking the Genome: Inside the Race to Unlock Human DNA. The Free Press.

Nobel laureate Joshua Lederberg stated that Avery and his laboratory provided "the historical platform of modern DNA research" and "betokened the molecular revolution in genetics and biomedical science generally".

While working at Rockefeller Institute, Avery contracted Grave's disease, which caused him to experienced mood swings of depression and irritability.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=63–67 |language=English}} After undergoing a thyroidectomy, Avery once again became more lively and began sailing, where he fell in love with the sport. Shortly after, he retired in Nashville, Tennessee, where he lived close to his brother and his brother's family, where he was regarded not as a scientist, but as a pleasant family man and a kind country gentleman.{{Cite book |last=Dubos |first=René J. |title=The Professor, the Institute, and DNA |publisher=Rockefeller University Press |year=1976 |isbn=0874700221 |location=New York |pages=67–68 |language=English}} While in the southern United States, Avery took a particular interest in the local flora and would act as a gardener would, learning about and appreciating the flowers and trees.

Avery's enthusiasm toward researching nucleic acids continued into his retirement, and he would continue his work with Dr. Hugh Morgan, chairman of the department of medicine at Vanderbilt Medical School. Dr. Morgan was given a research grant from the Department of Defense to study immunity to streptococcal infection, and he convinced Avery to help him in his research. Avery worked on this research with Dr. Bertram E. Sprofkin. The two wrote a joint report on "Studies on the bacteriolytic property of Streptomyces albus and its action on hemolytic streptococci".

During his later years, Avery became terminally ill with extensive hepatoma, or liver cancer. He died at age 77 on February 20, 1955, and was buried in Mount Olivet cemetery in Nashville.

The collected papers of Avery are stored at the Tennessee State Library and Archives and at the Rockefeller Archive. Many of his papers, poems, and hand written lab-notes are available at the National Library of Medicine in the Oswald T. Avery Collection, the first of their Profiles in Science series.{{cite web|title=The Oswald T. Avery Collection|url=https://profiles.nlm.nih.gov/CC/Views/Exhibit/narrative/biographical.html|publisher=National Library of Medicine|access-date=April 28, 2011}}

{{Reflist}}

• {{cite journal | last1 = Diamond | first1 = Arthur M. | year = 1982 | title = Avery's 'Neurotic Reluctance' | doi = 10.1353/pbm.1982.0002 | journal = Perspectives in Biology and Medicine | volume = 26 | issue = 1| pages = 132–136 | pmid = 6765132 | citeseerx = 10.1.1.587.6127 | s2cid = 45856676 }}
• René Dubos, The Professor, the Institute, and DNA: Oswald T. Avery, His Life and Scientific Achievements, 1976, Paul & Company, {{ISBN|0-87470-022-1}}
• {{cite book|last=Lehrer|first=Steven|title=Explorers of the Body|url=https://books.google.com/books?id=iwDn7ubDO2kC|publisher=iUniverse, Inc|location=United States|year=2006|isbn=0-595-40731-5 |edition=2nd}}
• {{cite journal | last1 = Sri Kantha | first1 = S | year = 1989 | title = Avery's non-recognition in Nobel awards | journal = BioEssays | volume = 10 | issue = 4| page = 131 | doi=10.1002/bies.950100411| pmid = 2730635 | s2cid = 221464173 }}
• {{cite journal|last=Avery|first=O T|author2=Macleod C M|author3=McCarty M|date=October 2000|title=Studies on the chemical nature of the substance inducing transformation of pneumococcal types: Induction of transformation by a desoxyribonucleic acid fraction isolated from Pneumococcus type III. Oswald Theodore Avery (1877–1955)|journal=Clin. Orthop. Relat. Res.|volume=379|issue=379 Suppl|pages=S3–8|pmid=11039746|doi=10.1097/00003086-200010001-00002|pmc=2229990}}
• {{cite journal|last=Austrian|first=R|date=July 1999|title=Oswald T. Avery: the Wizard of York Avenue|journal=Am. J. Med.|volume=107|issue=1A|pages=7S–11S|pmid=10451004|doi=10.1016/S0002-9343(99)00109-6|doi-access=free}}
• {{cite journal|last=Lederberg|first=J|date=February 1994|title=The transformation of genetics by DNA: an anniversary celebration of Avery, MacLeod and McCarty (1944)|journal=Genetics|volume=136|issue=2|pages=423–6|doi=10.1093/genetics/136.2.423|pmid=8150273|pmc=1205797}}
• {{cite journal|last=Amsterdamska|first=O|year=1993|title=From pneumonia to DNA: the research career of Oswald T. Avery|journal=Historical Studies in the Physical and Biological Sciences |volume=24|issue=pt 1|pages=1–40|doi=10.2307/27757711|jstor=27757711|pmid=11623400}}
• {{cite journal|last=Russell|first=N|date=December 1988|title=Oswald Avery and the origin of molecular biology|journal=The British Journal for the History of Science|volume=21|issue=71 Pt 4|pages=193–400|pmid=11621687|doi=10.1017/S0007087400025310|s2cid=40622286}}
• {{cite journal|last=Pirie|first=N W|date=December 1972|title=Avery in retrospect|journal=Nature|volume=240|issue=5383|pages=572|pmid=4568407|doi=10.1038/240572a0|bibcode=1972Natur.240..572P|s2cid=30778901|doi-access=free}}
• {{cite journal|last=Coburn|first=A F|year=1969|title=Oswald Theodore Avery and DNA|journal=Perspect. Biol. Med.|volume=12|issue=4|pages=623–30|doi=10.1353/pbm.1969.0002|pmid=4900165|s2cid=39988917}}
• {{cite encyclopedia|last=Kay|first=Alan|title=Avery, Oswald T.|encyclopedia=Dictionary of Scientific Biography|volume=1|pages=342–343 |publisher=Charles Scribner's Sons|location=New York|year=1970|isbn=0-684-10114-9}}
• [http://osulibrary.oregonstate.edu/specialcollections/coll/pauling/dna/people/avery.html Key Participants: Oswald T. Avery] - Linus Pauling and the Race for DNA: A Documentary History
• [https://web.archive.org/web/20100528161434/http://www.tennessee.gov/tsla/history/manuscripts/findingaids/70-128.pdf Oswald Avery Papers finding aid at the Tennessee State Library and Archives]
• [http://oculus.nlm.nih.gov/cgi/f/findaid/findaid-idx?c=nlmfindaid;id=navbarbrowselink;cginame=findaid-idx;cc=nlmfindaid;view=reslist;subview=standard;didno=avery Oswald T. Avery Collection (1912-2005)] - National Library of Medicine finding aid
• [https://profiles.nlm.nih.gov/spotlight/cc The Oswald T. Avery Collection] - Profiles in Science, National Library of Medicine
• [http://www.nasonline.org/publications/biographical-memoirs/memoir-pdfs/avery-oswald-t.pdf National Academy of Sciences Biographical Memoir]

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{{Copley Medallists 1901-1950}}

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{{DEFAULTSORT:Avery, Oswald}}

Category:1877 births

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Category:Foreign members of the Royal Society

Category:History of genetics

Category:People from Halifax, Nova Scotia

Category:Recipients of the Albert Lasker Award for Basic Medical Research

Category:Recipients of the Copley Medal

Category:Rockefeller University people

Category:Scientists from New York (state)