| Abstract: | ![]()
Five doses of d,l-para-chloroamphetamine (0.0, 15,0, 30.0, 45.0 and 60.0 mg/kg) were used to challenge 10 groups of 16 male and 10 groups of 16 female CF-1 mice weighing either 16 to 25 g or 40 to 55 g. Twenty-four hours after intraperitoneal injection, rates of lethal toxicity were assessed. Effects for body weight and dose were found. In addition, a sex by dose interaction was demonstrated. It was hypothesized that the influence of weight might be related to thermoregulatory processes, since as weight rises, surface-to-volume ratios decline, and with them the efficiency of heat exchange. Caution is suggested in the interpretation of ontological studies of drug response. |
