Figure 4. The average mean latency of first (A); second (B) and third (C) trial to locate a submerged platform in the MWM test over four weeks. Mice received daily injections of saline, scopolamine (1 mg/kg, s.c.) or scopolamine plus cannabis (5, 10 or 20 mg/kg) and were tested three times weekly. Asterisks indicate significant change from the saline control group. The plus sign indicates significant change from the scopolamine only or scopolamine + cannabis 5 mg/kg group.