Article
Virulence of Streptococcus suis type 2 strains in newborn germfree pigs depends on phenotype.
Infection and immunity - 1 Feb 1992
Vecht U, Wisselink H J, van Dijk J E, Smith H E
Abstract excerpt
To determine whether the virulence of Streptococcus suis type 2 is associated with the phenotype of the strain, we infected newborn germfree pigs with 10 strains of S. suis type 2 categorized by three phenotypes. In an earlier study, the phenotypes were distinguished by the presence or absence of the muramidase-released protein (MRP) and an extracellular factor (EF) and were designated MRP+ EF+, MRP+ EF- and MRP-...
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