Question

short note on immune response
for 5 marks​

Answer 1

Answer:

The immune system protects the body from possibly harmful substances by recognizing and responding to antigens. Antigens are substances (usually proteins) on the surface of cells, viruses, fungi, or bacteria. ... The immune system recognizes and destroys, or tries to destroy, substances that contain antigens.

Immunity. Immunity is the ability of the body to defend itself from 'foreign bodies'. This means rejecting infections, clearing up dust which gets in the lungs, and killing cancer cells. Vaccination builds on the natural immune system to make a person resist certain diseases.

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