Lymphocytes are formed by :

• plasma cells

• mast cells

• liver cells

• none of these

Which of the following organs is not involved in the elicitation of immune response?

• Brain

• Lymph nodes

• Spleen

• Thymus

Fever in malaria is due to :

• entry of sporozoites into blood capillaries

• entry of merozoites into liver cells

• release of merozoites from red blood cells

• entry of cryptomerozoites into red blood cells

Which of the following pair is characterised by swollen lips, thick pigmented skin of hands and legs and irritability ?

• Iodine - Goitre

• Protein - Kwashiorkor

• Thiamine - Beri-beri

• Nicotinamide- Pellagra

Human immuno deficiency virus causes

• Acquired immuno deficiency syndrome

• Anthrax

• Tuberculosis

• Polio

In humans, schizont stage of Plasmodium is found inside:

• liver cells only

• liver, spleen and blood cells

• RBCs and liver cells

• RBCs only

Kala-azar disease is transmitted by :

• Tabinus

• Sotomax

• Glossina

• Phlebotomus

268.

Which of the following cells are associated with immune system of body?

• Neutrophils

• Macrophages

• Lymphocytes

• All of these

The vaccine of Hepatitis-B is a :

• first generation vaccine

• interferon

• second generation vaccine

• third generation vaccine

Which of the following is a component of cell mediated immunity?

• B-cells

• $\mathrm{\alpha }$- cells

• T-cells

• Both (a) and (c)