Fig. 5. Proliferation and neurogenesis in 6 integrin^-/- cortex. Micrographs of E14 wild-type and 6 integrin^-/- cortex sections (A,B,E-H) stained as indicated. (C,D) Quantification of the number of PH3-positive cells in M phase per cortex area (C; wild type: n=39 sections, three animals, 6 integrin^-/-: n=50, three animals) and of the percentages of cells dividing with horizontal, oblique or perpendicular orientation to the ventricular surface (D; wild type: n=89 mitoses, one animal, 6 integrin^-/-: n=150, one animal) in wild-type and 6 integrin^-/- cerebral cortex. Scale bars: 100 µm.