title: Cleavage nucleoli and ribosomal RNA synthesis in sea urchin eggs.
mesh_terms: D000818:Animals; D001345:Autoradiography; D002466:Cell Nucleolus; D005260:Female; D005467:Floxuridine / Q000494:pharmacology; D008854:Microscopy, Electron; D010063:Ovum / Q000166:cytology* / Q000187:drug effects; D012335:RNA, Ribosomal / Q000096:biosynthesis*; D012617:Sea Urchins / Q000166:cytology*; D014316:Tritium; D014529:Uridine / Q000378:metabolism
chemical_list: D012335:RNA, Ribosomal; D005467:Floxuridine; D014316:Tritium; D014529:Uridine