[class of compounds named after and generally derived from C20 fatty acids (eicosanoic acids) that includes prostaglandins, leukotrienes, thromboxanes, and hydroxyeicosatetraenoic acids; they have hormone-like effects mediated by specialized receptors (eicosanoid receptors). ( CSP )] (UMLS (CSP) C0013725) =Eicosanoid ; =Fatty Acids, Unsaturated; cell communication molecule =Leukotriene; [HS875] PROSTAGLANDINS; Thromboxane; Arachidonic Acids