During fly neurogenesis, neuroblasts delaminate from the epidermal layer, a columnar epithelium with pronounced apical–basal polarity. As a neuroblast delaminates from this layer, the cell ...

Day 4 embryoid showing an inner epiblast like domain in magenta that has apico-basal polarity (yellow apical, blue basal), similar to the epiblast of the human embryo just after implantation.

that have critical functionsin maintaining the shape and apical-basal polarity of epithelial cells. Figure 1: The domains and junctions of epithelial cells. Adherens junctions (AJ)contain the most ...