A hormone secreted by the thymus gland that may be important in the aging process.
Hormone secreted by the thymus, present in greatest amounts in childhood and decreasing in amount throughout life.
An endocrine gland that produces lymphocytes and regulates the immune system; located posterior to the sternum between the lungs.
A peptide hormone, produced in cells of the thymus and believed to play a part in T lymphocyte development.