variable region

Fetched 2026-10-26 (cache).

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Noun

1. {{lb|en|immunology|biochemistry|molecular biology}} The portion of an [[antibody]] whose [[amino acid]] sequence varies between different antibodies, forming the antigen‑binding domains that determine [[specificity]].

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.