Evidence-Based Complementary and Alternative Medicine / 2011 / Article / Fig 4

Research Article

Expression of Pigment Cell-Specific Genes in the Ontogenesis of the Sea Urchin Strongylocentrotus intermedius

Figure 4

Normal embryo development of the sea urchin S. intermedius: zygotes (20 min pf, Zy); blastula stage (14 hpf, Bl); gastrula stage (24 hpf, Gl); (d) prism stage (34 hpf, Pr); (e) pluteus (8 dpf, Pl). Nomarski’s optics. Bar, 50 μm.