Question
Cellular factors in innate immunity.
✓
Answer
- Phagocytic cells ingest and destroy the pathogens.
- This is natural defence against the invasion of pathogenic microorganisms and other foreign particles in blood and tissues.
- Phagocytic cells are of two types, viz. microphages and macrophages. They can remove foreign particles that enter the body.
- 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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