passages.id: split_6_test_1184_passage
passages.type: progene_text
passages.text: In the developing neocortex , delta-catenin mRNA is strongly expressed in the proliferative ventricular zone and the developing cortical plate , yet is conspicuously less prominent in the intermediate zone , which contains migrating cortical neurons , delta - catenin protein forms a honeycomb pattern in the neuroepithelium by labeling the cell periphery in a typical adherens junction pattern .