Lysozyme that is present in perspiration, saliva, and tears destroys:

1.	certain fungi	2.	certain types of bacteria
3.	all viruses	4.	most virus-infected cells

HIV that causes AIDS first starts destroying:

1. B-lymphocytes

2. leucocytes

3. thrombocytes

4. helper T-lymphocytes

In mammals, histamine is secreted by:

1. fibroblasts

2. histocytes

3. lymphocytes

4. mast cells

Active immunity means:

Vaccine for tuberculosis is known as:

1. PAS vaccine

2. BCG vaccine

3. OPV

4. OPT

Alcoholism may lead to:

1. skin cancer

2. liver cirrhosis

3. viral disease

4. eye infections

Match the items of column I with column II and choose the correct option from the codes given below.

1. A-4 B-1 C-2 D-3

2. A-2 B-1 C-4 D-3

3. A-2 B-4 C-1 D-2

4. A-2 B-3 C-4 D-1

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

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: