Effects of PHNO (0.001, 0.01, 0.1 μg/3 μl/rat) and co-administration of PHNO (0.1 μg) with raclopride (0.1 μg) on dlST (upper) and NA (lower) DOPAC/DA ratios in OVX+E
rats in the morning. Data are expressed as mean ± SEM (n = 5–7 rats). *, p < 0.05; **, p < 0.01 compared with respective control groups. #, p < 0.05 compared with the PHNO (0.1 μg)-injected groups.