Match the disease in column-I with the appropriate items (pathogen/prevention/treatment) in column-II.

	Column I		Column II
A.	Amoebiasis	1.	Treponema pallidum
B.	Diphtheria	2.	Use only sterilized food and water
C.	Cholera	3.	DPT vaccine
D.	Syphilis	4.	Use oral rehydration therapy

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

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

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

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

Cornea transplant in humans is almost never rejected. This is because:

1. its cells are least penetrable by bacteria

2. it has no blood supply

3. it is composed of enucleated cells

4. it is a non-living layer

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

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