Isotype (immunology)

In immunology, the “immunoglobulin isotype” refers to the type of chain. In humans, there are nine isotypes:

• heavy chain
  • α – IgA 1, 2
  • δ – IgD
  • γ – IgG 1, 2, 3, 4
  • ε – IgE
  • μ – IgM
• light chain
  • κ
  • λ

Immunoglobulin class switching can be used to change the class of the heavy chain, but not of the light chain.

• idiotype
• immunoglobulin allotype

• Immunoglobulin+Isotypes at the US National Library of Medicine Medical Subject Headings (MeSH)
• Template:EMedicineDictionary
• Overview at University of South Carolina School of Medicine
• Overview at Southern Illinois University Carbondale

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