EdU incorporation over time. Number of EdU+cells were counted in the CMZ region, marked by co-expression of PAX6 and VSX2, and compared to the number of EdU cells in the rest of the retinosphere containing the far periphery. Counts are normalized to millimeters of retinal length. Error bars displayed are SEM. CMZ vs. far-periphery two-way ANOVA,p= 0.0157. Fourteen individual samples quantified for these data are listed inFigure S1D; minimum of two retinospheres with an average of four retinospheres per time point.