Paraformaldehyde-fixed, paraffin embedded (Human colon cancer); Antigen retrieval by boiling in sodium citrate buffer (pH6.0) for 15min; Blocking buffer (normal rabbit serum) at 37°C for 30min; Incubation: Anti-IFIT1 Antibody, conjugated (SL15553R-FITC) at 1:200 overnight at 4°C; DAPI (blue, C02-04002) was used to stain the cell nuclei.