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n. 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.

n. A substance that induces an immune response, usually foreign.

n. any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies)

"In non-permissive transformed cells the antigen is a protein of molecular weight of about 94,000 daltons"

substance   

antigenic   

immunizing agent    foetoprotein    Rh factor    agglutinogen    anatoxin    Rhesus factor    immunogen    toxoid    Rh    fetoprotein   

peptide    ligand    receptor    adhesion    peptides    antibody    proliferation    T cell    metastasis    insulin