pubmed-article:2337652 | pubmed:abstractText | Following daily intraperitoneal injections of ethanol at a dose of 3.5 g/kg rats developed tolerance to its hypnotic action, which was manifested in a drastic decrease of ethanol--induced sleep time and the number of animals sleeping more than 60 min. In the liver, this process was characterized by an elevated alcohol dehydrogenase activity and a decreased aldehyde dehydrogenase one, whereas that of MEOS remained unchanged. | lld:pubmed |