Effects of the genotypes of Rapgef2 and Rapgef6 on the distribution of neural progenitor cells. Effects of the genotypes of Rapgef2 and Rapgef6 on the.

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Effects of the genotypes of Rapgef2 and Rapgef6 on the distribution of neural progenitor cells. Effects of the genotypes of Rapgef2 and Rapgef6 on the distribution of neural progenitor cells. A, Immunohistological detection of Pax6+ cells, Tbr2+ cells, and BrdU-labeled S-phase cells. Coronal sections of the brains of Rapgef2-f/f (2-f/f), Rapgef2-cKO (2-cKO), Rapgef6-KO (6-KO), and Rapgef2/6-dKO (2/6-dKO) embryos at E13.5 and E15.5, which had been subjected to BrdU labeling, were subjected to immunostaining for Pax6 (green), Tbr2 (cyan), and BrdU (red). Pial and apical surfaces of the cortices are indicated by white lines. The images are representative of four biological replicates of each group. Scale bars, 100 µm. B, C, Distribution of Pax6+ cells and Tbr2+ cells in the cerebral cortices. Brain sections prepared and stained as in A were subjected to the quantification of Pax6+ cells (green lines) and Tbr2+ cells (red lines) residing in each bin, as described in Materials and Methods (B). Data are expressed as mean ± SD values derived from at least four biological replicates. The progenitors contained in a total of 10 bins (100 μm in width) were counted as described in Materials and Methods (C). Data are expressed as the mean ± SD values derived from four mice of each genotype. Student’s t test: *p < 0.05, **p < 0.01. D, Immunohistological detection of Pax6+ cells, Tbr2+ cells, and pHH3+ metaphase cells. Brain sections prepared as in A were subjected to immunostaining for Pax6 (green), Tbr2 (cyan), and pHH3 (red). Pial surfaces are indicated by white lines. The images are representative of four biological replicates of each group. Scale bars, 100 µm. E, F, Ectopic localization of Pax6+ and Tbr2+ metaphase cells. The percentages of the ectopically localized somata of pHH3+/Pax6+ cells in the total pHH3+/Pax6+ cells contained in the 10 bins (100 μm in width) were determined using the immunostained sections described in D (E). Also, pHH3+/Pax6+ cells and pHH3+/Tbr2+ cells in a total of 10 bins (100 μm in width) were counted. Data are expressed as the mean ± SD values derived from four mice of each genotype. Student’s t test: **p < 0.01. Kazuhiro Maeta et al. eneuro 2016;3:ENEURO.0142-16.2016 ©2016 by Society for Neuroscience