title: STUDIES ON THE SYNTHESIS OF RIBONUCLEIC ACIDS IN EMBRYONIC STAGES OF XENOPUS LAEVIS.
mesh_terms: D000818:Animals; D001001:Anura; D004622:Embryo, Mammalian; D004625:Embryo, Nonmammalian; D008660:Metabolism; D010063:Ovum; D010710:Phosphates; D010759:Phosphorus Isotopes; D012313:RNA; D012333:RNA, Messenger; D011898:Ranidae; D012106:Research; D014982:Xenopus laevis
chemical_list: D010710:Phosphates; D010759:Phosphorus Isotopes; D012333:RNA, Messenger; D012313:RNA
keywords: EMBRYO; EXPERIMENTAL LAB STUDY; FROGS; METABOLISM; OVUM; PHOSPHATES; PHOSPHORUS ISOTOPES; RNA; RNA, MESSENGER