heavy chain

Heavy chain may refer to:

• Immunoglobulin heavy chain, a subunit of antibodies
• Heavy-chain antibody, an antibody composed of heavy chains only
• Heavy chain disease, a disease affecting antibody heavy chain production
• Myosin heavy chain, a subunit of myosin II
• Myosin-heavy-chain kinase, an enzyme that catalyses the phosphorylation of myosin heavy chains

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