Temperature Effects on the Basal @H-II Release The basal GtH-II levels of the pituitary fragments perifused at 25°C and 20°C were significantly higher than that at 10°C (Fig. 1); however, there were no significant differences between the basal GtH-II levels of the pituitary fragments perifused at 25”C, 20°C and 15”C, and between the basal GtH-II levels of the pituitary fragments perifused at 15°C and 10°C. In the continuous treatment experiments, the basal GtH-II levels of pituitary fragments perifused at 20°C were significantly higher than those at 10°C (Figs. 3 and 4) o