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Amplification products of RT-PCR using primers JV_NA2_Pol F/JV_NA2_Pol R for the detection of bovine noroviruses, the inoculum (lane 2), the fecal sample 06V0221 of calf JV-4 (lane 3), and the fecal sample 07V0062 of calf Co-5 (lane 4). A molecular size marker is represented in lane 1.
