Mice that have been given morphine are very likely to develop blood poisoning because bacteria that normally reside in the intestine typically respond to morphine by migrating into the bloodstream.
摄入了吗啡的老鼠很可能会发生血液中毒，因为通常存在于肠道的细菌会通过迁移到血液中来对吗啡做出反应。
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When mice are given both morphine and the new drug naltrexone, blood poisoning is much less frequent, although it does still occur.