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Dose-effect functions for the effects of naloxone on ventilation (from time-effect functions shown in Fig. 5) and rectal temperature when administered 5 minutes after administration of saline, 0.1 mg/kg fentanyl, 3.2 mg/kg heroin, or 3.2 mg/kg d-methamphetamine. See Fig. 2 for other details (see Table 4 and Supplemental Table 8 for details of statistical analyses).
