Figure 4: Characterization of cerebral organoids via immunohistochemistry. Lightsheet images of cerebral organoids are shown to provide an example of the cellular architecture that forms. At day 25, DAPI (A) and phosphor-Vimentin (B) indicate individual rosettes and the ventricular zones, respectively. (C) TBR2 labels intermediate progenitors that are migrating outward, and MAP2 (D) labels neurons that have formed in the cortical plate. (E,E') The combination of these proteins clearly shows the recapitulation of cortical development in the cerebral organoid models. (F-I) By day 108, gliogenesis has occurred, with a mixture of GFAP+ and MAP2+ cells populating much of the organoid. VZ = ventricular zone, SVZ = subventricular zone, IZ = intermediate zone, CP = cortical plate. Please click here to view a larger version of this figure.