M.S.R.V. (Modified Semisolid Rappaport Vassiliadis) Semi-Solid Môi trường vi sinh M.S.R.V. (Modified Semisolid Rappaport Vassiliadis) Semi-Solid M.S.R.V. (Modified Semisolid Rappaport Vassiliadis) Semi-Solid Differentiating medium used for the presumptive identification of Samonella in chocolate and other food products.