and contents of peptides active on smooth muscle preparations, systemic blood pressure and, subordinately, external secretions, anterior pituitary and the central nervous system. 2. ephedra extract peptide families identified in skin extracts ephedra extract as follows: caruleins (caerulein, phyllocaerulein), tachykinins (physalaemin, phyllomedusin).

their binding profiles to opioid receptors were determined, and their biological activities ephedra extract studied in isolated organ preparations and intact animals. The opioid binding ephedra extract revealed a ephedra extract high selectivity of these peptides for .mu. sites and suggested the existence of two receptors subtypes, of high and low affinity. The peptides tested acted as potent .mu. opioid agonists on isolated organ preparations. They were several times ephedra extract active in inhibiting electrically evoked contractions in guinea pig ileum than in mouse vas deferens. When injected into the lateral brain ventricle or peritoneum of rats, the ephedra extract ligand, [Lys7-NH2]dermorphin, behaved as a potent analgesic agent. By contrast, the ephedra extract ligand, [Trp4,Asn7-NH2]dermorphin, !produced a weak antinociception but ephedra extract intense catalepsy.AI: YST: Caviidae-: Rodentia-, Mammalia-, Vertebrata-, Chordata-, Animalia-; Muridae-: Rodentia-, Mammalia-, Vertebrata-, Chordata-, Animalia-TN: Vertebrata.

urine of an individual. Infrequent users with a fast metabolism will have the shortest detection time. ephedra extract users with a slow.