title: Network structure in the blastocoel of developing sea urchin embryos.
mesh_terms: D000818:Animals; D001755:Blastocyst / Q000648:ultrastructure*; D005109:Extracellular Matrix / Q000648:ultrastructure*; D005404:Fixatives; D005775:Gastrula / Q000648:ultrastructure; D008855:Microscopy, Electron, Scanning; D012617:Sea Urchins / Q000196:embryology*
chemical_list: D005404:Fixatives