Does baby brain really exist? Answers from Myra Wick, M.D., Ph.D. There isn't enough information to support the existence of baby brain or pregnancy brain â terms used to describe the idea that pregnancy or early motherhood can harm a woman's memory and ability to think.
What two sites are involved in the production and maturation of T lymphocytes? What hormone is secreted by the thymus and stimulates the maturation of lymphocytes into T cells? Thymosin (THIGH-moh-sin) is secreted by the thymus and effects the  maturation of T-cells.
The thymus gland's main function is to bring a type of lymphocyte, or white blood cell called a T-lymphocyte, or T-cell, to maturity. The precursors of T-cells are produced in your childâs bone marrow. From the bone marrow, these cells migrate to the thymus, where they mature until ready to take up their role to fight infection. The thymus also manufactures thymosin, a hormone that stimulates lymphocytes in other organs to mature.