MCQ
The principle function of the lymph node in the man is
- ADestruction of old $ RBC$
- BDestruction of old $WBC$
- ✓Collection and destruction of pathogens blood
- DProduction of $WBC$
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$(i)$ Avoid sex with unknown partners
$(ii)$ Use condoms during coitus
$(iii)$ Blood transfusion
$(iv)$ All of these

$R$ : It must not be resilient to occasional disturbance.