bactérie (1) animal domestique (tenu en appartement) (1) gène (1) ADN (1) contamination (1) Control (1) Observations (1) Observations (1) Reverse transcriptase (1) RNA (1) Operons (1) Messenger RNA (1) Experiments (1) Evidence (1) DNA (1) Configurations (1) Structure (1) Experiments (1)