411 REFERENCE · Wiktionary
Fab region
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Noun
en immunology biochemistry molecular biology The portion of an antibody formed from the variable region domains and the first constant region domains of the heavy and light chains, constituting one of the two arms and containing the antigen‑binding site.
Synonyms
fragment antigen‑binding region
See also
en Fc region
en variable region
en constant region
en heavy chain
en light chain
en paratope