Today, I did some microscopy work. Below are photomicrographs showing anterior and posterior portions of the suprachiasmatic nuclei (SCN), the structure in the hypothalamus that regulates sleep/wake and circadian physiology. The nuclei are the dark purplish bulbs at the base above the smiley-face-esque optic chiasm (OC) which transmits photic information. The anatomical locationS of the OC and SCN are purposeful given that the SCN integrates photic information to control sleep/wake and circadian physiology. I also include a staining of the dentate gyrus; an integral structure of learning and memory. These stainings are from a mouse.