n. Any of a group of potent hormonelike substances that are produced in various mammalian tissues, are derived from arachidonic acid, and mediate a wide range of physiological functions, such as control of blood pressure, contraction of smooth muscle, and modulation of inflammation. [PROSTA(TE) GLAND (from the mistaken belief that the first prostaglandin discovered was secreted by the prostate) + -IN.] |
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