title: Cytoplasmic deoxyribonucleic acid in roots of Pisum sativum.
mesh_terms: D002247:Carbon Isotopes; D002467:Cell Nucleus / Q000032:analysis; D002498:Centrifugation; D003593:Cytoplasm / Q000032:analysis*; D004247:DNA / Q000032:analysis*; D008854:Microscopy, Electron; D008970:Molecular Weight; D010944:Plants / Q000032:analysis*; D013936:Thymidine; D014316:Tritium
chemical_list: D002247:Carbon Isotopes; D014316:Tritium; D004247:DNA; D013936:Thymidine