Figure 4

Photomicrographs illustrating the rostrocaudal levels of the paraventricular hypothalamic nucleus anterior parvo (PaAP), medial preoptic area (MPA), lateral hypothalamus (LH) delineation of regions by immunostaining of cFos ir (dark speckled puncta on image): (A) − 1.30 mm bregma of caffeine treated rats; (B) − 1.30 mm bregma of vehicle treated rats; (C) represent -1.40 mm of caffeine treated rats; (D) − 1.40 mm bregma of vehicle treated rats. Dashed lines represent regions of interest. 3 V 3rd ventricle. Scale bar, 200 µm.