OLD AND NEW RNA IN THE EMBRYOGENESIS OF THE PURPLE SEA URCHIN.
D000818:Animals; D004447:Echinodermata; D047108:Embryonic Development; D008660:Metabolism; D009705:Nucleosides; D010063:Ovum; D012313:RNA; D012106:Research; D047270:Strongylocentrotus purpuratus; D014316:Tritium
D009705:Nucleosides; D014316:Tritium; D012313:RNA
ECHINODERMATA; EXPERIMENTAL LAB STUDY; METABOLISM; NUCLEOSIDES; OVUM; RNA; TRITIUM