Yersinia Selective Agar Base (Dehydrated)

Isolate and enumerate Yersinia enterocolitica from clinical specimens and food samples with Thermo Scientific™ Oxoid™ Yersinia Selective Agar Base (Dehydrated) when used with Yersinia Selective Supplement (SR0109).

Yersinia enterocolitica is a bacterial species in the family Enterobacteriaceae that most often causes enterocolitis, acute diarrhea, terminal ileitis, mesenteric lymphadenitis, and pseudoappendicitis but, if it spreads systemically, can also result in fatal sepsis.

Yersinia Selective Agar Base and the selective supplement SR0109 have been developed specifically for the optimum growth and recovery of Yersinia enterocolitica after 18-24 hours incubation at 32°C.

The typical colonies of Yersinia enterocolitica will develop as a red bullseye surrounded by a transparent border and will vary considerably among serotypes in colony size, smoothness and the ratio of the border to center diameter. Most other organisms that are capable of growing will produce larger colonies (>2mm in diameter) with diffuse pinkish centers and opaque outer zones. Serratia liquefaciens, Citrobacter freundii and Enterobacter agglomerans may give a colonial morphology resembling Yersinia enterocolitica. These organisms can be differentiated from Yersinia enterocolitica by biochemical tests.

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