Antibodies are proteins that are secreted by B cells and they are produced in response to a foreign antigen. Antibodies bind with specific antigen and this binding either prevents an infection or it can lead to targeted destruction of the invading pathogens.

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Antibodies Are

Question 20

Multiple Choice

Antibodies are

A) proteins secreted by activated B cells that bind antigen.
B) antigens found on certain foreign invaders.
C) proteins produced by T helper cells.
D) antigens on the surface of red blood cells.
E) part of the HLA complex.

Correct Answer: