Thymosin stimulates
(a) milk secretion (b) erythrocytes
(c) T-lymphocytes (d) melanocytes
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Answer:
t- lymphocytes
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(c) T-lymphocytes
Explanation:
A lobular structure located between lungs behind sternum on the ventral side of aorta is called thymus gland. For the development of the immune system, thymus plays a major role. This gland secretes the peptide hormones called thymosins. Thymosins play a major role in the differentiation of T-lymphocytes, which provide cell-mediated immunity. In addition, thymosins also promote production of antibodies to provide humoral immunity. Thymus is degenerated in old individuals resulting in a decreased production of thymosins. As a result, the immune responses of old persons becomes weak.
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