title: Estimation of rDNA content in Xenopus laevis eggs during early development [proceedings].
mesh_terms: D000818:Animals; D002455:Cell Division; D002467:Cell Nucleus / Q000032:analysis; D002499:Centrifugation, Density Gradient; D004247:DNA / Q000032:analysis*; D005260:Female; D009865:Oocytes / Q000032:analysis; D010063:Ovum / Q000032:analysis*; D014981:Xenopus
chemical_list: D004247:DNA