AIDS is caused by HIV that principally infects
All lymphocytes
Activator $B$ cells
$T_4$ lymphocytes
Cytotoxic $T$ cells
Which drugs quickly reduce the symptoms of allergy ?
Cancer cells are more easily damaged by radiation than normal cells because they are
Widal test is used for the diagnosis of
Mark the correct statement
Assertion: There is no chance of malaria to a man on the bite of male Anopheles mosquito.
Reason: It carries a non-virulant strain of Plasmodium.