estrogen
definition of estrogen
1. a hormone (a chemical made by the body that controls the actions of certain cells or organs) that is needed to develop and maintain female sex characteristics and the growth of long bones. Estrogens are also made in the laboratory and are used in birth control and to treat symptoms of menopause, menstrual disorders, and osteoporosis.1
estrogen receptor binding assay
definition of estrogen receptor binding assay
1. ER binding assay. A laboratory test to determine the presence of a protein found on cells of female reproductive tissue, some other tissues in the body, and some cancer cells. The hormone estrogen will attach (bind) to the receptors inside the cells and may cause the cells to grow.1