Multi-dimensional marine organisms dataviewer

Embryonic development of Phallusia mammillata from 2 cell to gastrulation

Interkinetic nuclear migration in early ascidian embryos

Waves of mitosis in the sea urchin embryo

16 cell Vegetal 3D

Development of the ctenophore embryo

Section of the cortical vegetal region of the unfertilized egg of the ascidian Phallusia mammillata.

Just fertilized egg of the ascidian Phallusia mammillata (left) and corresponding vegetal pole cortex (right).

Gastrulation seen from the vegetal pole

110 cell stage seen from the vegetal pole

32 cell stage

Fertilized egg 5 minutes after sperm entry

First cleavage 45 minutes after fertilization.

ERK1/2 activation in the developing marginal zone

Fertilized egg 5 minutes after sperm entry

Fertilization triggers a microfilament-driven contraction.

The vegetal /contraction pole 10 minutes after fertilization

Phallusia embryo (16-cell stage during mitosis, vegetal view, posterior at bottom)

Phallusia embryo (64-cell stage during interphase, vegetal view, posterior on top)