Write short note on :Cellular factors in innate immunity.

1.	Write short note on :Cellular factors in innate immunity.
Answer» 1. Phagocytic cells ingest and destroy the pathogens. 2. This is natural defence against the invasion of pathogenic microorganisms and other foreign particles in blood and tissues. 3. Phagocytic cells are of two types, viz. microphages and macrophages. They can remove foreign particles that enter the body. 4. Natural killer (NK) cells is a class of lymphocytes which carry out important and non-specific defence against viral infections and tumours.

Answer»

1. Phagocytic cells ingest and destroy the pathogens.

2. This is natural defence against the invasion of pathogenic microorganisms and other foreign particles in blood and tissues.

3. Phagocytic cells are of two types, viz. microphages and macrophages. They can remove foreign particles that enter the body.

4. Natural killer (NK) cells is a class of lymphocytes which carry out important and non-specific defence against viral infections and tumours.

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