The use of the Listeria monocytogenes DTH gene for the detection of pathogenic biovars in food.

A gene probe encoding a Listeria monocytogenes delayed type hypersensitivity factor (DTH) was used for the detection of pathogenic biovars/serovars of the genus Listeria isolated from soft cheese. A total of 187 strains, isolated by plating techniques, were screened. The probe reacted with all isolated serovars of L. monocytogenes (except one 4b strain) and… (More)