Answer:
Explanation:
Inject an altered form of the pathogen
White blood cells release complementary antibodies to the specific antigen
They attach and clump pathogens together
White blood cells engulf the pathogen phagocytosis occurs
During the primary infection the antibodies slowly increase, peak at around ten days and then gradually decrease.
A second exposure to the same pathogen causes the white blood cells to respond quickly in order to produce lots of the relevant antibodies, which prevents infection.
