Type | MGI:General | Description | frequency of cyclin D nuclear labeling is reduced for basal progenitors, fewer BrdU+ Tbr2+ basal progenitors are seen in the subventricular zone, and a decrease in the number of PH3-labeled mitotic basal Tbr2+ basal progenitors, indicating that several phases of the cell cycle, especially M phase, are disrupted in basal, but not apical, E14.5 cortical progenitors |