20 Difference between Antigen and Antibody – Antigen vs Antibody
19 min read 
Antigens are any substances that stimulate the immune system. Foreign antigens originate from the outside of the body and may be pathogens (such as disease-causing viruses or bacteria), allergens (such as pollen), or toxins (such as venom or chemicals). Autoantigens originate within the body and typically do not elicit an immune response, except in people … Read more