title: Effect of dissociation of embryos of Urechis caupo on synthesis of ribosomal RNA.
mesh_terms: D000818:Animals; D000845:Annelida / Q000378:metabolism*; D001345:Autoradiography; D002449:Cell Aggregation; D002499:Centrifugation, Density Gradient; D003562:Cytidine / Q000378:metabolism; D003851:Deoxyribonucleases; D004625:Embryo, Nonmammalian / Q000032:analysis / Q000378:metabolism*; D006151:Guanosine / Q000378:metabolism; D008722:Methods; D011402:Pronase; D012313:RNA / Q000032:analysis; D012335:RNA, Ribosomal / Q000032:analysis / Q000096:biosynthesis*; D012260:Ribonucleases; D013997:Time Factors; D014316:Tritium; D014529:Uridine / Q000378:metabolism
chemical_list: D012335:RNA, Ribosomal; D014316:Tritium; D006151:Guanosine; D003562:Cytidine; D012313:RNA; D003851:Deoxyribonucleases; D012260:Ribonucleases; D011402:Pronase; D014529:Uridine