Hmm.. fissure development?
_Spatiotemporal expansion of primary progenitor zones in the developing human cerebellum_
“H&E-stained midsagittal sections of the developing human cerebellum. The two main zones of neurogenesis, the ventricular zone (red arrowhead) and rhombic lip (black arrow head) are marked. Primary and secondary fissures are noted (arrows). Scale bar = 100 μm””