When mice are given both morphine and the new drug naltrexone, bloodpoisoning is much less frequent, although it does still occur.
当老鼠同时服用吗啡和新型药物纳曲酮时，虽然仍会发生血液中毒，但发生的频率大大降低。
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Mice that have been given morphine are very likely to develop bloodpoisoning because bacteria that normally reside in the intestine typically respond to morphine by migrating into the bloodstream.