Fig. 2. Strand specificity of RT-PCR for HCV RNA using a set of NT-primer. The upper panel shows no detectable positive strand HCV RNA in the RT-PCR procedure for n egative strand RNA. The bottom panel shows no detectable negative strand RNA in the RT-PCR in the RT-PCR procedure for positive strand RNA. Therefore, we cl aim that our RT-PCR method is specific and strand specificity can be maintain ed at a level of 200 ng which is approximately 4.3¡Á10£Û10£Ý HCV RNA molecul es per assay.
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