showed a trendP = 0.07
Although by days 3–7 the 0.9% saline and PPL groups were very similar, the 0.9% saline replacement group only showed a trend toward a difference compared to the morphine group ( P = 0.07).
Although by days 3–7 the 0.9% saline and PPL groups were very similar, the 0.9% saline replacement group only showed a trend toward a difference compared to the morphine group ( P = 0.07).
PPL-101 (0.3–3.0 mg/kg; Figure 7 ) showed a marked trend to reduce operant responding for morphine.