Viperin protein expression was detected in certain cell lines from gastric cancer (MKN1, MKN28, AGS, SNU668, and NCC19), lung cancer (HCC4017), and breast cancer (Hs578T) by immunoblotting (Figure 1D) and confocal immunofluorescence microscopy (Supplemental Figure 1D). This evidence concerns the gene RSAD2 and lung cancer.