Antibody-mediated Immune Response

Antigens are proteins found in or on the surface of the invading microorganism and recognised as foreign substances by our body.

B-cells produce other proteins, called antibodies, which bind to the antigen and so stop the invader.

Each antibody binds to only one type of antigen (high specificity).

The antibody-coated microorganism is finally eaten by macrophages.

After the disease has been fought off, some antibodies remained in our bloodstream would be ready for fighting the next attack of the same foreign substances.

 

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