Fig. 1.

Overview of the cortex. a Schematic of the rodent brain section in sagittal orientation. Cerebral cortex is shaded in blue. Dashed boxes represent functional cortical areas as labeled. b P7 mouse visual cortex labeled with DAPI (white) to mark cell nuclei. c Same image as b, showing astrocyte marker Aldh1l1 (white), obtained from mice expressing GFP under the Aldh1l1 promoter. Cortical neurons are arranged in 6 layers, marked in red. Astrocytes are present in all cortical layers in the visual cortex. Scale bar = 50 μm