Changes in nucleolar ultrastructure during amphibian development.
D000818:Animals; D001001:Anura / Q000196:embryology*; D001345:Autoradiography; D002455:Cell Division; D002466:Cell Nucleolus; D008854:Microscopy, Electron; D014316:Tritium; D014529:Uridine; D014562:Caudata / Q000196:embryology*
D014316:Tritium; D014529:Uridine