Extended Data Fig. 4: The correlated nature of epithelial cell divisions.

a, Epithelial surface of two egg chambers stained for the mitotic marker Cyclin B (CycB), showing domains (~5-15 cells) of coordinated expression. Arrowheads pointing to two adjacent dividing cells in one of those domains. b, Surface of a follicle epithelium expressing fluorescently labeled Pav (red), and the nuclear Proliferating Cell Nuclear Antigen (PCNA); arrowheads point to dividing connected cells. Scale bars in a and b = 10 μm.