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.
Serve as a site of T cell maturation. The spleen serves as an immune system surveillance organ; it also stores platelets and breaks down erythrocytes. There are plenty of T cells in the white pulp of the spleen, but the T cells do not mature there; the exclusive role of the thymus is to foster T cell maturation.he spleen serves as an immune system surveillance organ; it also stores platelets and breaks down erythrocytes. There are plenty of T cells in the white pulp of the spleen, but the T cells do not mature there; the exclusive role of the thymus is to foster T cell maturation.