Figure 3From: Development and implementation of the quality control panel of RT-PCR and real-time RT-PCR for avian influenza A (H5N1) surveillance network in mainland China The results of the RT-PCR for H5N1 HA and artificially modified HA gene. A-1/B-1: DL2000 molecular weight marker; A-2: HA amplicon of H5N1 virus HA gene; A-3: Amplicon of IPC gene; B-2: Typical IPC amplificons under cross contamination happened.Back to article page