“Intraperitoneal injection of prostaglandin E1 (PGE) produces a transient hypothermia in rats that lasts 1-2 h. Rats exposed to an … temperature (Ta) of 26 degrees C displayed a decrease in rectal temperature (Tre) of 0.95 +/- 0.12 degrees C SE ) after … with PGE (100 micrograms/kg ip).”