title: Nucleolar DNA in sea urchin oogenesis studied by 3H-actinomycin D binding.
mesh_terms: D000818:Animals; D001345:Autoradiography; D002466:Cell Nucleolus; D004247:DNA / Q000378:metabolism; D003609:Dactinomycin / Q000378:metabolism*; D005260:Female; D010063:Ovum / Q000032:analysis / Q000254:growth & development*; D012617:Sea Urchins / Q000196:embryology*; D014316:Tritium
chemical_list: D014316:Tritium; D003609:Dactinomycin; D004247:DNA