Drug may seek in rats.Logical formLearned from6 sentences. Rats may receive cocaine.Logical formLearned from6 sentences. Rats may be vaccinated with a substance.Logical formLearned from6 sentences. A rat can be tame.Logical formLearned from6 sentences. A rat can be crazy.Logical formLearned from6 sentences. Rats can be with tumors.Logical formLearned from6 sentences. Rats may spend.Logical formLearned from6 sentences. Rats may be used in a study.Logical formLearned from6 sentences. An experiment can be with rats.Logical formLearned from6 sentences. Responses can be constituted-of-or-filled-with rats.Logical formLearned from6 sentences. Some games can be with rats.Logical formLearned from6 sentences. Studies may be conducted with rats.Logical formLearned from6 sentences. Effects may be seen in rats.Logical formLearned from6 sentences. Persons may use a (rat model).Logical formLearned from6 sentences. Rats can be on board.Logical formLearned from6 sentences.