Expression of Pigment Cell-Specific Genes in the Ontogenesis of the Sea Urchin Strongylocentrotus intermedius
Effect of shikimic acid (ShA) on the larval morphology of the sea urchin S. intermedius. Disturbances in embryo development after 8 days of incubation with ShA. ShA was added to (a) zygotes; (b) embryos of the blastula stage; (c) embryos of the gastrula stage. ShA concentrations tested: 1–0.1 mM, 2–0.5 mM, and 3–2.0 mM. Nomarski’s optics. Bar, 50 μm.