The cells which suppress the entire immune system from its attack in the same body are known as
Helper $T$-cells
Killer $B$-cells
Suppressor cells
Suppressor $T$-cells
$A$ - Smoking is associated with increased incidence of cancer of lung
$R$ - It increase $CO$ content in blood and reduce the concentration of haembound oxygen
Sprinkling oil over ponds would control malaria because
In embryonic stage $RBCs$ develop in
If there are two pathogenic viruses, one with $DNA$ and other with $RNA$, which would mutate faster ? And Why ?