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 selection and. generation of CD4 +CD25 suppressor T cells by agonist ligands is not. a trivial issue, given that full activation of CD4 +CD25+ suppressor T. cells in secondary lymphoid tissue can be initiated by agonist ligands, and hence the generation as well as the activation of CD4+CD25+.