Fig. 7
From: Cleavage modification did not alter blastomere fates during bryozoan evolution

Mesodermal and endodermal cells in M. membranacea. Maximum intensity projections of 2–3 slices from one confocal stack at the mid gastrula stage. View of the anterior/right side of the embryo (top-left) to the posterior/left side (bottom-right). Samples stained with propidium iodide for DNA/RNA (grays) and with BODIPY FL phallacidin for f-actin (orange). en endodermal cells, ms mesodermal stack of cells from the B quadrant (4b derivatives), mu muscle cells reaching the apical organ, me other mesodermal cells. Asterisk indicates the blastopore. Scale bar = 20 μm