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  • Title: Listeria monocytogenes serotype 4b strains belonging to lineages I and III possess distinct molecular features.
    Author: Liu D, Lawrence ML, Gorski L, Mandrell RE, Ainsworth AJ, Austin FW.
    Journal: J Clin Microbiol; 2006 Jan; 44(1):214-7. PubMed ID: 16390972.
    Abstract:
    A collection of Listeria monocytogenes serotype 4b strains belonging to lineages I and III were examined by PCR and Southern blot analysis using species-, virulence-, and serotype-specific primers and probes. Whereas four serotype 4b lineage I strains reacted in PCR with the serotype 4b-, 4d-, and 4e-specific ORF2110 and virulence-specific lmo1134 and lmo2821 primers, all nine serotype 4b lineage III strains were negative by ORF2110 and lmo1134 primers. In addition, the nine serotype 4b lineage III strains formed two separate groups through their reactions in PCR with virulence-specific lmo2821 primers. Southern blot analysis using species-specific lmo0733 and virulence-specific lmo2821 gene probes largely confirmed the PCR results. These findings indicate that L. monocytogenes serotype 4b strains belonging to lineages I and III possess distinct molecular features.
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