What is true for monoclonal antibodies?
| 1. | These are obtained from one parent and for one antigen |
| 2. | These are obtained from different parents and for one antigen |
| 3. | These are obtained from one parent and for many antigens |
| 4. | These are obtained from many parents and for many antigens |
Interferons are synthesized in response to:
1. Mycoplasma
2. Bacteria
3. Viruses
4. Fungi
What is true about T-lymphocytes in mammals:
| 1. | There are three main types-cytotoxic T-cells, helper T-cells and suppressor T-cells |
| 2. | These originate in lymphoid tissues |
| 3. | They scavenge damaged cells and cellular debris |
| 4. | These are produced in the thyroid |
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