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Results 1 - 1 of 1 for "syphilis," Treponema pallidum OR "syphilis," secondary
  1. Primary Syphilis (VisualDX)  
    Syphilis/Images ... Syphilis ... VisualDX ... Primary syphilis is a sexually transmitted infection (STI) caused when a bacterium called Treponema pallidum penetrates ...