An antigen is any substance that causes your immune system to produce antibodies against it. The antigen may be a foreign substance from the environment (such as chemicals, bacteria, viruses, or pollen) or formed within the body (such as bacterial toxins or tissue cells).
by Amalia K. Gagarina, M.S., R.D.
All ArmMed Media material is provided for information only and is neither advice nor a substitute for proper medical care. Consult a qualified healthcare professional who understands your particular history for individual concerns.