azo·pro·tein noun \ˌā-zō-ˈprō-ˌtēn, -ˈprot-ē-ən\
: any of various compounds made by coupling a protein (as serum albumin) with a diazotized amine (as histamine or sulfanilamide), and sometimes used as synthetic antigens
Seen & Heard
What made you want to look up azoprotein? Please tell us where you read or heard it (including the quote, if possible).