Abstract
Salmonella enterica serotype Enteritidis PT4 and Typhimurium DT104 isolates were characterized using a random amplification of polymorphic DNA (RAPD) protocol found previously to be highly discriminatory for isolates of Salmonella. Profiles generated with a single primer 1254, and independently 1283, successfully characterized an outbreak strain of Enteritidis PT4 but could not differentiate epidemiologically unrelated strains of Enteritidis PT4 from the outbreak strains. Primer 1254 differentiated one strain, and 1283 two strains of Typhimurium DT104 previously undifferentiated on the basis of biochemical and physical properties. Subsequent analysis using a combination of RAPD and restriction enzyme analysis could not provide additional differentiation of Enteritidis PT4 and Typhimurium DT104 isolates but did, however, exhibit the potential to be a useful combination of molecular techniques.
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