Table 1.

Percentage of Ca²⁺-binding protein or neuropeptide-immunopositive cells that colocalize with Reln in cortical layers of the frontoparietal cortex

Neuronal marker	Layer I, %	Layer II–III, %	Layer IV–VI, %	Total, %
Calretinin	57	26	0	22
Calbindin	—	22	27	25
Parvalbumin	—	0	0	0
NPY	—	82	89	85
Somatostatin	0	50	65	57

In each section of the frontoparietal cortex studied, every neuronal somata positive for a given neuropeptide or protein was verified for Reln-immunoreactivity. We studied each of three consecutive sections from each rat (see Materials and Methods), and the percentage of somata coexpressing one of the markers under study and Reln was tabulated.