Fig. 3From: Use of nested PCR for the detection of trichomonads in bronchoalveolar lavage fluidGel image of positive samples: GoldView-stained agarose gel showing the PCR amplicons of the 18S RNA gene of trichomonad species; M, 100-bp DNA molecular size markers; +, positive control (T. vaginalis); ā, negative control (human DNA); 1ā10, positive samplesBack to article page