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.
Lymphocytes are divided mainly into B and T cells. 1  B lymphocytes produce antibodies - proteins (gamma globulins) that recognize foreign substances (antigen) and attach themselves to them. 2  T lymphocytes are cells that are programmed to recognize, respond to and remember antigens.