Fig. 7

Effects of l-histidine on feeding suppression in ventral gastric vagotomized rats. a Cumulative amount of food intake per rat body weights at 1, 3, 6, 12 h after injection of l-histidine (i.p.) or saline (i.p.) in rats with vagotomy or sham operations. *p < 0.05 compared with control group. ^† p < 0.05 compared with l-histidine 0.75 g/kg group (Tukey–Kramer’s test). b Effects of l-histidine 2.0 g/kg or saline on saccharin preference in vagotomized rats and sham-operated rats. *p < 0.05. c The typical photomicrograph of a brain section from rats with ventral gastric vagotomy. Absence of Fluoro-Gold labeling in the left DMN as shown by an arrow indicates a successful vagotomy