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Appl Environ Microbiol. 1991 February; 57(2): 604-605
Biology Department, Lycoming College, Williamsport, Pennsylvania 17701.
ABSTRACT
Modification of a method for coliform verification presented in Standard Methods for the Examination of Water and Wastewater is described. Modification of the method, which is based on beta-galactosidase production, involves incorporation of a lactose operon inducer in medium upon which presumptive coliform isolates are cultured prior to beta-galactosidase assay.
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