poids (1) tritium (1) espèce (1) ADN (1) distribution (1) carbone (1) Treatment (1) Urea (1) Tritium (1) Transcription (1) Species (1) Sedimentation analysis (1) RNA (1) Polyomaviruses (1) Nucleic acid hybridization (1) Molecules (1) Mice (1) Isotopes (1) Genetic code (1) Extracts (1) Electrophoresis (1) Dimethyl sulfoxide (1) DNA (1) Centrifugation, Density gradient (1) Cells (1) Carbon (1) Autoradiography (1) Animals (1) Weight (1) Transcription (1)