Which of the following are the reason(s) for Rheumatoid arthritis? Choose the correct option. 

i:	The ability to differentiate pathogens or foreign molecules from self-cells increases.
ii:	Body attacks self cells.
iii:	More antibodies are produced in the body.
iv:	The ability to differentiate pathogens or foreign molecules from self-cells is lost.

1.	i and ii	2.	ii and iv
3.	iii and iv	4.	i and iii

Which of the following does not define health in the WHO definition of health?

Consider the following two statements:

Which of the following fungus is not a causative organism of ringworm?

Interferons are secreted by:

Graft rejection is due to:

1. Innate immune response
2. Humoral immune response
3. Cell-mediated immune response
4. Auto-immune response

Which of the following is a recombinant vaccine?

The class of antibodies involved in allergic response is:

Histamine in the blood is released by:

Steroid abuse in males does not cause:

1. Decrease in size of the prostate
2. Acne
3. Breast enlargement
4. Reduction of testicle size