Search Result for "histocompatibility complex":
Wordnet 3.0

NOUN (1)

1. a family of fifty or more genes on the sixth human chromosome that code for proteins on the surfaces of cells and that play a role in the immune response; 



WordNet (r) 3.0 (2006):

histocompatibility complex
    n 1: a family of fifty or more genes on the sixth human
         chromosome that code for proteins on the surfaces of cells
         and that play a role in the immune response