Evidence can be in rats.Logical formLearned from5 sentences. Rats may be trained to cocaine.Logical formLearned from5 sentences. Rats may be compared to controls.Logical formLearned from5 sentences. Rats may give birth.Logical formLearned from5 sentences. Mortality can be in rats.Logical formLearned from5 sentences. Some rats may be administered.Logical formLearned from5 sentences. (Laboratory rats) may be given.Logical formLearned from5 sentences. Rats can be anesthetized.Logical formLearned from5 sentences. (Laboratory experiments) can be with rats.Logical formLearned from5 sentences. A rat may undergo an arrival.Logical formLearned from5 sentences. Rats can be chronic.Logical formLearned from5 sentences. Hepatocytes can be from rats.Logical formLearned from5 sentences. A sound can be constituted-of-or-filled-with (gnawing rats).Logical formLearned from5 sentences. Rats may show anxiety.Logical formLearned from5 sentences. A drug may be given to rats.Logical formLearned from5 sentences.