complementarity-determining regions
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- (Abbreviation: CDR). Regions of the light and heavy subunits of the immunoglobulin molecules that interact with the antigen. The primary amino acid sequences of these regions are highly variable between antibodies of the same class. See: antibody binding site.
UN Food and Agriculture Organization - Cite This Source - This Definition - allotype, constant domains, dAb, Michaelis constant, single domain antibody, V region, variable domain