Expression of PDGF-αR in the P1 mouse brain.A, Immunodetection of PDGF-αR protein in the prefrontal cortex. PDGF-αR is localized on neurites and neuronal cell bodies. B, Immunoreactivity for PDGF-αR in the entorhinal cortex. PDGF-αR is widely expressed in the cerebral cortex (Cx) as well as in presumptive white matter structures, as illustrated for the corpus callosum (CC) and fibers of the striatum (St) in C. Striatal neurons are not stained with the polyclonal anti-PDGF-αR.D, Immunostaining of cells of the periventricular zone of the lateral ventricle. Magnification: A, B, D, 200×;C, 50×.