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

Increased asthmatic attacks in certain seasons are related to :

Mast cells secrete:

1. hippurin 

2. myoglobin 

3. histamine 

4. Haemoglobin 

Antibodies in our body are complex:

1. lipoproteins 

2. steroids

3. prostaglandins

4. glycoproteins

Both sickle cell anaemia and Huntington's chorea are

1. bacteria-related diseases

2. congenital disorders

3. pollutant-induced disorders

4. virus-related diseases

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:

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