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Transcription factor PrfA controls the expression of virulence genes essential for Listeria monocytogenes pathogenesis. To gain insight into the structure-function relationship of PrfA, we devised a(More)
BACKGROUND The natural occurrence of primary resistance mutations in reverse transcriptase (RT) and protease (PR) genes of HIV-1 isolates from untreated patients has been reported and it may have(More)
OBJECTIVES To examine HIV-1 genetic diversity in St. Petersburg. METHODS Partial HIV-1 pol sequences from 102 plasma samples collected in 2006 were analyzed with a Bayesian phylogeny inference(More)