A substance that when introduced into the body stimulates the production of an antibody. Antigens include toxins, bacteria, foreign blood cells, and the cells of transplanted organs.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "antigen" in a sentence
"In non-permissive transformed cells the antigen is a protein of molecular weight of about 94,000 daltons"
"The most important antigen is the machismo that continues to permeate these work environments."
"It was known that antigen is endocytosed with antigen receptors and then degraded."