What does the $AIDS$ virus contain?

In an $HIV$ infected person,the $HIV$ produced in macrophages enters which cells to replicate and produce its progeny?

$HIV$ virus affects which of the following cells in the human body?
$(i)$ $T_H$ cells
$(ii)$ $T_1$ cells
$(iii)$ Mast cells
$(iv)$ Macrophages

Which of the following is not related to chromosomal aberration?

$AIDS$ is caused by

$A$: Vaccine against $AIDS$ has not been made in spite of repeated attempts.
$R$: $HIV$ has the ability to mutate to form several subtypes.