Integrity of Cajal–Retzius cells in thereeler‐mouse hippocampus

Cajal–Retzius (CR) cells are early‐born glutamatergic neurons that are primarily known as the early main source of the signal protein Reelin. In the reeler mutant, the absence of Reelin causes severe defects in the radial migration of neurons, resulting in abnormal cortical layering. To date, the exact morphological properties of CR‐cells independent of Reelin are unknown. With this in view, we studied the ontogenesis, density, and distribution...