Fig. 1. Epithelial cell contact correlates with the embryonic neuroblast division axis. (A) Lateral view of stage 10 and (B) stage 15 metaphase and telophase neuroblasts. Markers listed within each panel. To the right are summaries of neuroblast orientation relative to the epithelium. Each red mark corresponds to the angle between a straight line connecting the apicobasal neuroblast axis at telophase and a straight line through the epithelial cell center. Brackets indicate neuroblasts; asterisks indicate Mir-positive basal cortex. Apical is upwards. Scale bar: 10 µm.