| Type | MGI:General | Description | at E16, Cajal-Retzius cells either are distributed in random areas of the cortices, are widely distributed throughout the upper half of the cortex, are entirely missing or are ectopically located outside of the meninges in areas where Cajal-Retzius cells are missing the cortical plate neurons aggregate as ectopias within the marginal zone and the meninges and in areas where then Cajal-Retzius cells have ended their migration prematurely the cortical plate neurons are displaced into a deeper layer in segments missing meningeal cells the Cajal-Retzius cells are missing |
