Hormones
Synonyms
Agonists, Hormone Receptor
Hormone
Hormone Receptor Agonists
Receptor Agonists, Hormone
Chemical substances having a specific regulatory effect on the activity of a certain organ or organs. The term was originally applied to substances secreted by various ENDOCRINE GLANDS and transported in the bloodstream to the target organs. It is sometimes extended to include those substances that are not produced by the endocrine glands but that have similar effects.