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Showing 1 to 1 of 1 for “"Placebo pellet"”.
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Self-Stimulation and Morphine Abstinence in the Rat.
… rats were implanted with either a morphine or placebo pellet. Naloxone or saline was administered 48 hours later and animals were observed briefly for abstinence behaviors. Immediately following the observation period, animals were tested in the shuttlebox. Of the ten animals undergoing …