title: Cellular distribution of RNA populations in 16-cell stage embryos of the sand dollar, Dendraster excentricus.
mesh_terms: D000818:Animals; D002499:Centrifugation, Density Gradient; D004447:Echinodermata / Q000196:embryology*; D005260:Female; D005306:Fertilization; D066298:In Vitro Techniques; D009693:Nucleic Acid Hybridization; D010063:Ovum / Q000032:analysis / Q000166:cytology*; D012313:RNA / Q000032:analysis*; D014316:Tritium; D014529:Uridine
chemical_list: D014316:Tritium; D012313:RNA; D014529:Uridine