To help treat cancer of the breast, kidney, or uterus. Progestins help change the cancer cell's ability to react to other hormones and proteins that cause tumor growth. In this way, progestins can stop the growth of a tumor. To test the body's production of certain hormones such as estrogen.
National Institute for Occupational Safety and Health. The National Institute for Occupational Safety and Health (NIOSH) was created by the Occupational Safety and Health Act of 1970 and is part of the Centers for Disease Control and Prevention (CDC). NIOSH is the only Federal agency tasked with conducting research to prevent worker injury and illness.
The reticular activating system (RAS), or extrathalamic control modulatory system, is a set of connected nuclei in the brains of vertebrates that is responsible for regulating wakefulness and sleep-wake transitions. As its name implies, its most influential component is the reticular formation.