Fig. 7

Cell proliferation patterns of P. californiensis invagination-stage larva. a Confocal z-projection of anti-phospho-histone antibody staining in invagination-state P. californiensis larva. b Overlaid fluorescent and transmitted-light image of the same larva. Arrows indicate the location of anterior invaginations. Arrowheads indicate the locations of posterior invaginations. Asterisk indicates apical organ.