A Typical Vaccine Consists of a Solution Containing ________

Question

A typical vaccine consists of a solution containing ________.
A)antibodies
B)horse serum
C)B cells
D)a harmless variant of a disease-causing microbe

Accepted Answer

A typical vaccine contains a harmless variant or component of a disease-causing microbe, such as an inactivated or weakened form of the pathogen, to stimulate the immune system to recognize and fight the actual pathogen if encountered in the future.