Coca alkaloid or cocaine is obtained from:

1.	Papaver somniferum	2.	Atropa belladonna
3.	Erythroxylum coca	4.	Datura

Humans have acquired an immune system that produces antibodies to neutralize pathogens. Still innate immune system is present at the time of birth because it:

The drug called 'Heroin' is synthesized by:

Identify the correct pair representing the causative agent of typhoid fever and the confirmatory test for typhoid.

1. Salmonella typhi/Widal test

2. Plasmodium vivax/UTI test

3. Streptococcus pneumoniae/Widal test

4. Salmonella typhi/Anthrone test

Colostrum, the yellowish fluid, secreted by the mother during the initial days of lactation is very essential to impart immunity to newborn infants because it contains:

Which of the following immune responses is responsible for the rejection of kidney graft?

1. Cell-mediated immune response

2. Auto-immune response

3. Humoral immune response

4. Inflammatory immune response

HIV that causes AIDS first starts destroying:

1. B-lymphocytes

2. leucocytes

3. thrombocytes

4. helper T-lymphocytes

To which type of barriers under innate immunity, do the saliva in the mouth and the tears from the eyes, belong?

1. Cytokine barriers

2. Cellular barriers

3. Physiological barriers

4. Physical barriers

Which one of the following is the correct statement regarding the particular psychotropic drug specified?

The letter T, in T- lymphocyte refers to:

1. thyroid

2. thalamus

3. tonsil

4. thymus