The protozoan found in colon of human is
In the given flow diagram, the replication of retrovirus in a host is shown. Observe and answer the following questions.
$(a)$ Fill in $(A)$ and $(B)$
$(b)$ Why is the virus called retrovirus ?
$(c)$ Can the infected cell survive while viruses are being replicated and released ?
The accumulation of excess fluid in tissue space is called
Cancer cells are more easily damaged by radiation than normal cells because they are
$BCG$ vaccine is used against