| Description: | One of many chemicals made by glands in the body. Hormones circulate in the bloodstream and control the actions of certain cells or organs. Some hormones can also be made in the laboratory.
Reference:
Dictionary of cancer terms, a service of the National Cancer Institute, National Institutes of Health http://www.cancer.gov/Templates/db_alpha.aspx?searchTxt=hormone&sgroup_Starts+with |