Can someone explain what an antigen and antibody are?

Question by goldclear182: Can someone explain what an antigen and antibody are?
I need to understand what an antigen and antibody are in blood. Is one good and the other bad?? Any info is appreciated.


Best answer:
Answer by Peter SAntigen - 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.

Antibodies (also known as immunoglobulins, abbreviated Ig) are

Read more about allergy and ...