Find the odd one out with respect to the disease causative agent:

Match the following columns.

Column-$I$	Column-$II$
$(1)$ $HIV$	$(v)$ Oncogenic virus
$(2)$ Cancer	$(w)$ Microsporum,Trichophyton
$(3)$ Allergens	$(x)$ Retrovirus
$(4)$ Ringworm	$(y)$ Colostrum
	$(z)$ Serotonin

The enlargement of the spleen during malaria is caused by:

Read the statements carefully and determine how many statements provide correct information.
$(1)$ In innate immunity,the cellular barrier is represented by four main types of cells.
$(2)$ The $BCG$ vaccine contains live attenuated Mycobacterium.
$(3)$ In $G-6-P$ dehydrogenase deficiency,$RBCs$ start to disintegrate (hemolysis).
$(4)$ Nicotine stimulates the adrenal gland.

Identify the molecules $(A)$ and $(B)$ shown below and select the right option giving their source and use.

Match the following columns:

Column-$I$	Column-$II$
$1.$ Typhoid	$a.$ Trichophyton
$2.$ Pneumonia	$b.$ Rhinovirus
$3.$ Common cold	$c.$ Haemophilus influenzae
$4.$ Ringworm	$d.$ Salmonella typhi