title: [Effects of substance P, substance K and VIP on the mammalian iris sphincter muscles].
mesh_terms: D000818:Animals; D002417:Cattle; D004285:Dogs; D066298:In Vitro Techniques; D007498:Iris / Q000187:drug effects*; D015288:Neurokinin A; D009479:Neuropeptides / Q000494:pharmacology*; D009801:Oculomotor Muscles / Q000187:drug effects*; D011817:Rabbits; D013045:Species Specificity; D013373:Substance P / Q000494:pharmacology*; D014660:Vasoactive Intestinal Peptide / Q000494:pharmacology*
chemical_list: D009479:Neuropeptides; D013373:Substance P; D014660:Vasoactive Intestinal Peptide; D015288:Neurokinin A