Effects of i.p. treatment with stressin1-A, Ucn 1, Ucn 2 and Ucn 3 on mean (±SEM) cumulative 2 h and 4 h food intake in 20 h food-deprived male Wistar rats. Food intake was normalized for body weight per Kleiber's mass exponent (0.75). *P < 0.05, **P < 0.01, ***P < 0.001, lower than respective vehicle treatment (Fisher's protected LSD test). Sample size (n) is indicated beneath each dose's symbol.