Viral protein levels in stable shRNA-expressing cell lines infected by H1N1 virus.

The indicated cell lines were infected with H1N1 virus for 6 hrs and stained with anti-NP antibody. Green represents signal from EGFP in the lentiviral vectors, while red (texas red) represents staining with anti-NP antibody. Images were taken by using a fluorescence microscope under a 400 magnification. All the pictures were captured under the same exposure time and gain.



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