M Prep | MCAT 2015 Question of the Day - Prep, Practice Questions, and More!

Q:

After an individual has been infected with certain pathogens and has cleared the infection, a second infection with the same pathogen will often elicit a much faster and stronger response. This second response can even clear the infection before the individual notices he or she is sick. Which of the following is responsible for the managing the second immune response?

A

innate immune system

B

adaptive immune system

C

complement cascade

D

vaccination