Ribosomal RNA synthesis during cleavage of Ascaris lumbricoides eggs.
The appearance of well-defined nucleoli in 4-celled Ascaris embryos is associated with the synthesis of ribosomal RNA.
D000818:Animals; D001200:Ascaris / Q000196:embryology*; D002466:Cell Nucleolus; D002499:Centrifugation, Density Gradient; D005260:Female; D008854:Microscopy, Electron; D010063:Ovum / Q000166:cytology / Q000378:metabolism*; D012313:RNA / Q000032:analysis / Q000096:biosynthesis*; D012270:Ribosomes / Q000378:metabolism*; D014316:Tritium; D014529:Uridine / Q000378:metabolism
D014316:Tritium; D012313:RNA; D014529:Uridine