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| Which among the following gland is large sized at the time of birth but reduces in size with aging? |
Peyer's patches. Pituitary gland. Thymus organ . Thyroid gland. |
| Thymus organ . |
| The thymus is quite large at the time of birth but keeps reducing in size with age and by the time puberty is attained it reduces to a very small size. Both bone-marrow and thymus provide micro-environments for the development and maturation of T-lymphocytes. |
