Question

Damage to thymus in a child may lead to

• A. a reduction in haemoglobin content of blood
• B. a reduction in stem cell production
• C. loss of antibody-mediated immunity
• D. loss of cell-mediated immunity

Answer 1

The correct option is D loss of cell-mediated immunity

Thymus gland secretes thymosin hormone, thymic humoral factor, thymic factor and thymopoietin. Proliferation of lymphocytes and differentiation of these lymphocytes into a variety of clones are induced by these factors. These clones are differentially specialized to destroy different specific category of antigens and pathogens. Thus, thymus gland brings fourth T-lymphocytes for cell mediated immunity.