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.
Human chorionic gonadotropin (hCG): This hormone stimulates the corpus luteum (the part of the egg follicle left behind in the ovary after ovulation) to produce estrogen and progesterone in the first 10 weeks after conception, until the placental cells can do so themselves.