A foreign body giant cell is formed by

1. osteoclasts

2. mast cells

3. plasma cells

4. histiocytes

The so-called tertain periodicity of Plasmodium vivax refers to the 

1. pre-erythrocytic phase 

2. post erythrocytic phase 

3. erythrocytic phase 

4. sexual phase.

Hybridoma is a synonym of

1. polyclonal antibody

2. monoclonal antibody

3. polymerase chain reaction

4. fluorescent in situ hybridization

Communicability of disease depends upon the availability of a 

1. pathogen 

2. parasitic

3. healthy person 

4. susceptible person

Which of the following is used to make vaccines?

1. Activated pathogen

2. Pathogen blocked by antibody 

3. Attenuated pathogen 

4. None of the above

An organism which has been used as a weapon in biological war causes which of the

following disease?

1. malaria

2. common cold

3. influenza

4. anthrax

Opium is obtained from which part of the plant Papaver somniferous?

1. Inflorescence

2. Male part (dried)

3. Fruit (unripe)

4. Seeds

Prostaglandins have no role in 

1. inflammatory and allergic reactions

2. blood clotting 

3. smooth muscle contraction

4. conduction of nerve impulses.

Memory cells are stored in

1. spleen

2. lymph nodes

3. both 1. and 2.

4. a specialised area of brain tissue

The highly pathogenic influenza A (H5NI) virus infects 

1. poultry 

2. ducks

3. migratory birds

4. all of these.