title: Nucleic acid synthesis in embryos and its bearing on cell differentiation.
mesh_terms: D000818:Animals; D001001:Anura; D002247:Carbon Isotopes; D002454:Cell Differentiation; D002466:Cell Nucleolus / Q000378:metabolism; D002499:Centrifugation, Density Gradient; D002845:Chromatography; D004247:DNA / Q000032:analysis; D004254:DNA Nucleotidyltransferases / Q000378:metabolism; D004261:DNA Replication; D004447:Echinodermata; D004625:Embryo, Nonmammalian / Q000378:metabolism*; D005246:Feedback; D005260:Female; D005306:Fertilization; D006657:Histones / Q000378:metabolism; D008297:Male; D008540:Meiosis; D053652:Nuclear Transfer Techniques; D009696:Nucleic Acids / Q000096:biosynthesis*; D010060:Ovulation; D010063:Ovum / Q000254:growth & development; D012313:RNA / Q000096:biosynthesis; D012270:Ribosomes / Q000378:metabolism; D013997:Time Factors; D014316:Tritium
chemical_list: D002247:Carbon Isotopes; D006657:Histones; D009696:Nucleic Acids; D014316:Tritium; D012313:RNA; D004247:DNA; D004254:DNA Nucleotidyltransferases