MCQ
Identify $X$ from Figure


- ABone marrow
- BLymph node
- CLymph vessel
- ✓Thymus

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| Column-I | Column- II |
| $(A)$ Hepatitis$-B$ | $(1)$ $HIV$ |
| $(B)$ $AIDS$ | $(2)$ $HBV$ |
| $(C)$ Genital worts | $(3)$ $HPV$ |
$T$-cells are lymphocytes which produce the cellular immunity. These are developed from