introduction: effects of melatonin (mt) were comparatively examined on melanophores of isolated skin in adults and tadpole’s tailfin of a frog rana cyanophlyctis. mt is generally considered as a potent melanophores aggregating hormone besides regulating the sleep wake cycle in vertebrates. methods: melanophore size index (msi) was chosen as a recording parameter of the responses. concentration-...

Introduction: Effects of melatonin (MT) were comparatively examined on melanophores of isolated skin in adults and tadpole’s tailfin of a frog Rana cyanophlyctis. MT is generally considered as a potent melanophores aggregating hormone besides regulating the sleep wake cycle in vertebrates. Methods: Melanophore size index (MSI) was chosen as a recording parameter of the responses. Concentr...

this manuscript is the result of ethnobotany and ethnopharmacology survey on the hezar mountain in se of iran. traditional botanical medicine is the primary mode of healthcare for most of the population of this region. the plants were collected in and around hezar mountain from 2008-2010. the authors have conducted an interview of total 75 informants; the traditional uses of 92 species belongin...

Background: Malathion (MT), an organophosphorus pesticide, induces hepatotoxicity and is associated with hyperglycemia and the development of diabetes mellitus.  Objectives: This study was aimed to evaluate the effects of sub-acute exposure to sub-lethal dose of MT in the liver of diabetic rats.  Methods: Non-diabetic and streptozotocin-induced diabetic rats received MT at a dose of 150 mg/kg...

kripke bas proposed a number of counteretxamples to the classic thesis, which ays that the class of necmary fropositions roincidn with the cla1ss of a priori ones. these counteretxamples involve some necessary a posten'ori trutbs as well as contingent a priori ones. om cfbis exmnplu far the loller is the 1ta11dard metre example. in thi1 paper, after presenting a brief sketch of kripke&apos...