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L'histamine comme indicateur d'alteration. ArchiMer
Nerisson, P.
In this study, the author tries to explain conditions of histamine formation in fish and their results for the public health. Then he gives some results of analysis effected on manufactory conserves.
Tipo: Text Palavras-chave: Parathunnus mebachi; Proteus morganii; Proteus mirabilis; Proteus vulgaris; Achromobacter histamineum; Processing fishery products; Biological poisons; Bacterial diseases.
Ano: 1975 URL: http://archimer.ifremer.fr/doc/1975/publication-2033.pdf
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Mini-Mu insertions in the tetracycline resistance determinant from Proteus mirabilis BJMBR
The inducible tetracycline resistance determinant isolated from Proteus mirabilis cloned into the plasmid pACYC177 was mutagenized by insertion of a mini-Mu-lac phage in order to define the regions in the cloned sequences encoding the structural and regulatory proteins. Three different types of mutants were obtained: one lost the resistance phenotype and became Lac+; another expressed the resistance at lower levels and constitutively; the third was still dependent on induction but showed a lower minimal inhibitory concentration. The mutant phenotypes and the locations of the insertions indicate that the determinant is composed of a repressor gene and a structural gene which are not transcribed divergently as are other known tetracycline determinants...
Palavras-chave: Tetracycline; Mutation; LacZ-fusion; Proteus mirabilis; Bacteriophage Mu.
Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000300009
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