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    Home > Biochemistry News > Microbiology News > Examining the VectorHostPathogen Interface With Quantitative Molecular Tools

    Examining the VectorHostPathogen Interface With Quantitative Molecular Tools

    • Last Update: 2021-02-22
    • Source: Internet
    • Author: User
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    We developed
    PCR
    assays to detect and quantitate
    Yersinia pestis
    , the bacterial agent of plague, in flea vector and mammalian host tissues. Bacterial numbers in fleas, fleabite sites, and infected lymph nodes were determined using real-time PCR with primers and probes for a gene target on a multi-copy plasmid specific to
    Y. pestis
    . Tissue-matched standard curves used to determine absolute bacterial numbers in unknown samples were linear over at least five orders of magnitude. The methods were applied to studies of transmission of
    Y. pestis
    by the rat flea
    Xenopsylla cheopis
    , but should be generally useful to investigate the transmission dynamics of any arthropod-borne disease.
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