Growth Factor

A substance made by the body that functions to regulate cell division and cell survival. Some growth factors are also produced in the laboratory and used in biological therapy. A naturally occurring protein chemical that stimulates cell division and proliferation. It...

GRS

Growth Hormone Research Society. The Growth Hormone Research Society (GRS) was founded in 1992 to provide a forum for the study and exchange of ideas on all aspects of growth hormone (GH) physiology, and diseases involving abnormalities of the GH axis.

Gynecomastia

A usually harmless female-like enlargement of one or both breasts in males; occurs commonly in teen-aged boys, but may be a characteristic of some hypogonadal males. Excessive development of the male mammary glands, even to the functional state; the development of...