Author Question: Vaccination is often an effective preventive measure because A) viruses have a memory. B) the ... (Read 81 times)

saliriagwu · **on:** Jun 22, 2018

Vaccination is often an effective preventive measure because

A) viruses have a memory.
B) the adaptive immune system has a memory.
C) conspecifics have a memory.
D) the innate immune system has a memory.
E) the acquired immune system has a memory.

Question 2

Microglia are phagocytes of the

A) blood.
B) liver.
C) adrenal cortex.
D) CNS.
E) PNS.