20100041089 | IMPROVED METHOD FOR DETECTING CHEMICAL SUBSTANCES - The present invention provides an assay method for conveniently and easily detecting existence or a quantity of a chemical substance in the environment without relying on expensive measurement devices used in fluorometry. More specifically, the present invention is characterized in that a transformed cell which is transformed by operably linking a polynucleotide encoding oxidoreductase at a downstream of a promoter gene for monitoring whose promoter activity varies with responding to a chemical substance is used. | 02-18-2010 |