Evidence for the appearance of novel gene products during amphibian blastulation.
D000818:Animals; D001001:Anura / Q000196:embryology*; D002247:Carbon Isotopes; D002454:Cell Differentiation; D004247:DNA / Q000378:metabolism; D005260:Female; D006824:Hybridization, Genetic; D010063:Ovum / Q000166:cytology; D010759:Phosphorus Isotopes; D012313:RNA / Q000096:biosynthesis*
D002247:Carbon Isotopes; D010759:Phosphorus Isotopes; D012313:RNA; D004247:DNA