Modified Semisolid Rappaport Vassiliadis (MSRV)
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Isolating salmonellae from a chicken. The cultures to the right and in the bottom of the plate have opaque zones. |
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Isolating salmonellae from a chicken. No opaque zones. |
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This medium is used for isolation of salmonellae. Motile strains of salmonellae migrate through the medium faster than competing organisms producing opaque zones. Suspect cultures can be tested further by taking inoculum from the edge of the zone. Note that both S. pullorum and S. gallinarum are non-motile.
The picture below shows Salmonella Typhimurium on MSRV.
Click on the picture to see an enlarged version. |
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