Figure 4From: A broad spectrum, one-step reverse-transcription PCR amplification of the neuraminidase gene from multiple subtypes of influenza A virusOne-step RT-PCR amplification of NA gene from clinical NPA samples. Example of amplification results of Influenza A and influenza B. Sample numbers correspond to the samples described in Table 1, except sample 35 which is influenza B (description data not shown); M, 100 bp DNA Hyperladder II (Bioline); and negative control (- ctrl: water instead of template).Back to article page