Response to Specific Pathogens That Can Improve with Subsequent Exposure

Question

Response to specific pathogens that can improve with subsequent exposure is
A) the first line of defense.
B) the second line of defense.
C) the third line of defense.
D) microbial antagonism.
E) innate immunity.

Accepted Answer

The response to specific pathogens that can improve with subsequent exposure is known as the third line of defense, or adaptive immunity. This involves the activation of B and T lymphocytes that specifically target and eliminate the pathogen, and can result in the production of memory cells that provide long-lasting protection against future infections.