genetic complementation article 24 nonhuman 22 priority journal 12 controlled study 10 gene mutation 10 unclassified drug 10 Bacteria (microorganisms) 8 animal cell 8 bacterial gene 8 genetic variability 8 molecular cloning 8 wild type 8 Bacillus subtilis 6 Genetic Complementation Test 6 Mutation 6 Pseudomonas 6 bacterial genome 6 bacterial growth 6 bacterial protein 6 bacterium colony 6 enzyme activity 6 gene expression 6 gene insertion 6 gene product 6 genetics 6 open reading frame 6 phenotype 6 plasmid 6 11alpha hydroxyprogesterone 4