A biological substance secreted by various cells whose physiological activity is restricted to the vicinity of its release; it is often referred to as a local hormone.
Source: PAC, 1998, 70, 1129. (Glossary of terms used in medicinal chemistry (IUPAC Recommendations 1998)) on page 1129 [Terms] [Paper]
Cite as: IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). Online version (2019-) created by S. J. Chalk. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook.