title: Arrangement of length heterogeneity in repeating units of amplified and chromosomal ribosomal DNA from Xenopus laevis.
mesh_terms: D000818:Animals; D001665:Binding Sites; D002875:Chromosomes / Q000378:metabolism*; D004247:DNA / Q000378:metabolism; D008854:Microscopy, Electron; D008970:Molecular Weight; D009690:Nucleic Acid Conformation; D012270:Ribosomes / Q000378:metabolism*; D014981:Xenopus
chemical_list: D004247:DNA