Humans have acquired immune system that produces antibodies to neutralize pathogens. Still innate immune system is present at the time of birth because it
Humans have acquired immune system that produces antibodies to neutralize pathogens. Still innate immune system is present at the time of birth because it
- [NEET 2019]
- A
is very specific and uses different macrophages.
- B
produces memory cells for mounting fast secondary response.
- C
has natural killer cells which can phagocytose and destroy microbes
- D
provides passive immunity
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$I$. Lymph node $II$. Thymus gland
$III$. Red bone marrow $IV$. liver
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$III$. Red bone marrow $IV$. liver
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$I.$ People should get vaccination to avoid infection
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