When the children without $T-$ cells and $B-$ cells are kept in germ free isolation suits, then the disease is
Immunity less hybrids
Anti-antigens immune system
$SCID$ (severed combined immuno deficiency)
None of these
Human immunodeficiency virus is a/an
If a muscle fails to give stimulation action and there is much ingestion of lactic acid, the condition is termed as
Fertilization and development of plasmodium occurs in
Which of the following is bacterial disease
In the given flow chart, the replication of retrovirus in a host cell is shown. Observe it carefully and fill up the blank $A, B$ and $C$