In immunology, an antigen is a molecule capable o inducin an immune response on the pairt o the host organism,[1] tho sometimes antigens can be pairt o the host itsel.

Antibody.svg

ReferencesEedit

  1. Alberts B, Johnson A, Lewis J, et al. (2002). "24. The Adaptive Immune System". Molecular Biology of the Cell (4th ed.). New York: Garland Science.