Morning and afternoon D
R mRNA ratios in MBH and their responses to constant light and E
exposures (A) and a schematic drawing of the coronal section of the rat brain (B) showing the punched area of MBH [grey circles, []]. A: Data are expressed as mean ± SEM (n = 10–14 rats in each treatment group). **, p < 0.01, compared with the control groups in the morning. #, p < 0.05 compared with the control groups in the afternoon. B: 3 V: the third ventricle; dmARN: dorsal medial arcuate nucleus; ME: median eminence.