title: Changes in metabolism of ribonucleic acid during the early embryonic development of the sea urchin.
mesh_terms: D000818:Animals; D002623:Chemistry Techniques, Analytical; D003609:Dactinomycin / Q000494:pharmacology; D004447:Echinodermata / Q000378:metabolism*; D004625:Embryo, Nonmammalian / Q000378:metabolism*; D066298:In Vitro Techniques; D012313:RNA / Q000378:metabolism*
chemical_list: D003609:Dactinomycin; D012313:RNA