Objective To investigate the expression of 3-Mercaptopyruvate sulfurtransferase(3-MST)in medulla oblongata of rats under normal,acute hypoxia and acute hypoxia plus exogenous hydrogen sulfide(H2S).Methods 21 Sprage-Dawley rats were randomly divided into normal control,acute hypoxia and acute hypoxia plus sodium hydrosulfide(NaHS)group.Acute hypoxia models of rats were established,then the expression 1evels of 3-MST mRNA were determined by RT-PCR in the medulla oblongata of each group rats.Results 3-MST mRNA...