Figure 2From: Effects of mu- and kappa-2 opioid receptor agonists on pain and rearing behaviorsWe evaluated the effects of GR89,696 and morphine on reaching activity and cumulative rearing duration. There was a significant dose-related decrease (*P < 0.05) in the number of reaching events (A) and total time spent rearing (B) following morphine (N = 8–12, right insets) or GR89,696 (N = 6, left insets) administration, compared to baseline values.Back to article page