expresses expresses basket cell cerebral cortex GABAergic interneuron parvalbumin-positive basket cell 2026-05-19T14:15:42Z PV basket cell Parvalbumin (PV) positive basket cell A basket cell of the hippocampal formation that expresses the calcium-binding protein parvalbumin (Pvalb) in rodents (Rivera et al., 2014; Que et al., 2021; Contreras et al., 2019). Somata are located in the pyramidal layers of CA1 and CA3 and the granule cell layer of the dentate gyrus. Axon collaterals are confined to the pyramidal layer, forming dense perisomatic inhibitory synapses on the somata of principal neurons; a single cell contacts more than 1500 pyramidal neurons (Sik et al., 1995). This cell is a fast-spiking GABAergic interneuron and is distinguished from CCK basket cells by absence of cannabinoid receptor 1 (Cnr1) expression (Whissell et al., 2015). hippocampal interneuron parvalbumin alpha