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Humans have acquired immune system that ...

Humans have acquired immune system that produces antibodies to neutralize pathogens. Still iinate immune system is present at the time of birth because it

A

Provides passive immunity

B

it is very specific and uses different macrphages

C

produces memory cells for mounting fast secondary response

D

has natural killer cells which can phagocytose and destroy microbes

Text Solution

Verified by Experts

The correct Answer is:
D
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