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  • Title: Comparison of ethidium monoazide and propidium monoazide for the selective detection of viable Legionella cells.
    Author: Chang B, Taguri T, Sugiyama K, Amemura-Maekawa J, Kura F, Watanabe H.
    Journal: Jpn J Infect Dis; 2010 Mar; 63(2):119-23. PubMed ID: 20332575.
    Abstract:
    Ethidium monoazide (EMA) and propidium monoazide (PMA) have been utilized for selective PCR amplification of DNA from viable bacterial cells. In this study, we compared the abilities of EMA and PMA, together with real-time PCR, to specifically distinguish dead Legionella cells from viable cells. Several experiments showed that PMA or EMA treatment could specifically prevent the PCR amplification of DNA from dead Legionella cells in water samples. However, a 4-fold higher concentration of PMA than EMA was required to achieve this effect. EMA may therefore be more useful for practical environmental investigations of Legionella.
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