Figure 2.

Runx1 is expressed in a restricted group of cells in the postnatal forebrain. Coronal (B–F, left column) or sagittal (H–L, right column) sections through the telencephalon of Runx1^LacZ/+ mice at the indicated postnatal (P) stages were subjected to detection of the distribution of β-gal activity using the X-gal substrate, followed by counterstaining with eosin. A, G, Schematic of the forebrain in the coronal (A) or sagittal (G) plane demonstrating the location (red square) of the areas examined in the corresponding experiments shown in the columns below. B, C, I, Arrows point to groups of β-gal⁺ cells in the ventricular/subventricular zone. CC, corpus callosum; CX, cortex; LV, lateral ventricle; HP, hippocampus; V3, third ventricle. Scale bar, 500 μm.