Zoology - Human Health and Diseases Question with Solution | TestHub

Antibodies are Y-shaped proteins that form part of the immune system. They circulate in the blood, identify foreign invaders such as bacteria, viruses, fungi or parasites and then eliminate them. There are five variations of antibodies called$\mathrm{I}\mathrm{g}\mathrm{M},\mathrm{ }\mathrm{I}\mathrm{g}\mathrm{A},\mathrm{ }\mathrm{I}\mathrm{g}\mathrm{D}$and$\mathrm{I}\mathrm{g}\mathrm{E}$. Each of these variations plays different roles in the immune system basis of their shape.$\mathrm{I}\mathrm{g}\mathrm{M}$is the first antibody that is produced when the body is exposed to an antigen. They bind to a large number of invaders.$\mathrm{I}\mathrm{g}\mathrm{G}$is the most common and smallest antibody.