Representative photomicrographs of c-Fos (black color) and dsRed (brown
color) immunostaining in the CPu, NAc, cerebral cortex and GP after activation
of nigrostriatal pathway (CNO administrated at 9 p.m., a-f) and mesolimbic
pathway (CNO administrated at 9 a.m., g-k). b and c, e and f, h and i, k and l
are magnified views of the rectangular boxes marked in a, d, g and j,
respectively.