Question
- What is the functional difference between B and T-cells?
- Name the source used to produce hepatitis-B vaccine using DNA technology.
✓
Answer
| S.No. |
B-lymphocytes
|
T-lymphocytes
|
| 1. |
B-cells form humoral or antibody-mediated immune system (AMIS).
|
T-cell form cell-mediated immune System (CMIS).
|
| 2. |
They defend against viruses and bacteria that enter the blood and lymph.
|
They defend against pathogens including protists and fungi that enter the cells.
|
| 3. |
They form plasma cells and memory cells by the division.
|
They form killer, helper and suppressor cells by the division of lymphoblasts.
|
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