On day 19, mice given delta-9-THC had a 34% reduction in primary tumor size. On day 30, primary tumor size was 76% that of controls and only those given 100 mg delta-9-THC/kg had a significant increase in survival time (36%). Mice treated with a delta-9-THC showed a slight weight loss over the 2-week period (average loss, 0.3 g at 50 mg/kg and 0.1 g at 100 mg/kg). This can be compared to cyclo-ohosphamide, which caused weight loss approaching 20% (table 2).
