Patent ID: 6699685
Filing Date: 2004-03-02
Classification: C12Q,G01N

Abstract:
A test medium for detecting the presence of biological material having &bgr;-galactosidase enzyme specificity, said test medium comprising:a base medium for maintenance of said biological material; and a chromogenic indolyl &bgr;-galactoside substrate forming an insoluble compound of a first color upon reacting with &bgr;-galactosidase, wherein said chromogenic &bgr;-galactoside substrate is selected from the group consisting of 6-chloroindolyl-&bgr;-D-galactoside, 4,6-dichloroindolyl-&bgr;-D-galactoside, 6,7-dichloroindolyl-&bgr;-D-galactoside, 4,6,7-trichloroindolyl-&bgr;-D-galactoside and salts thereof.