Question
Differentiate between Antigen and Antibody.
✓
Answer
Differences between Antigen and Antibody :
| S.No. | Antigen | Antibody |
| 1 | Bacteria, viruses and toxic substances entering the body is called Antigen. | When an antigen enters the body, the glycoprotein ubstances secreted by the B-lymphocyte cells of the body against the antigen are called antibodies |
| 2 | These cause diseases. | These do not cause diseases but destroy germs. |
| 3 | These combine with macrophages and generate immunity by activating T-helper cells. | They directly attack the antigen, form complexes and destroy the antigen. |
| 4 | Antigens enter from outside. | Whereas antibodies are formed inside the body. |
| 5 | These are found on the surface of the body of micro-organisms or in free state. | These are found on the surface of blood plasma cells or in the tissue fluids of the body. |
| 6 | They are of various types, such as bacteria, viruses, protozoa, pollen, drugs, toxins, and so on. | While these are of five types : IgM, IgG, IgA, IgE, IgD |
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