article 12 chloramphenicol acetyltransferase priority journal 12 5 aminolevulinate synthase 10 Humans 10 Nuclear Proteins 10 Promoter Regions (Genetics) 10 hepatoma cell 10 human 10 human cell 10 promoter region 10 5-Aminolevulinate Synthetase 8 Bioassay 8 Blotting, Western 8 Gene Deletion 8 Genes 8 Genes, Dominant 8 Genetic Vectors 8 Molecular mechanisms 8 RNA 8 RNA, Messenger 8 Transcription, Genetic 8 Transfection 8 controlled study 8 cyclic AMP responsive element 8 cyclic AMP responsive element binding protein 8 genetic transcription 8 messenger RNA 8 plasmid 8 reporter gene 8