Question

What is Antibodies?

Answer 1

a substance that the body in the blood to fight disease

Answer 2

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An antibody (Ab), also known as an immunoglobulin (Ig),[1] is a large, Y-shaped protein produced mainly by plasma cells that is used by the immune system to neutralize pathogens such as pathogenic bacteria and viruses. The antibody recognizes a unique molecule of the pathogen, called an antigen, via the Fab's Variable region. Each tip of the "Y" of an antibody contains a paratope(analogous to a lock) that is specific for one particular epitope.