Immunocytochemistry/Immunofluorescence: SMAD4 Antibody (4G1C6) [NBP1-51646] - Immunofluorescence analysis of NIH3T3 cells using SMAD4 mouse mAb (green). Blue: DRAQ5 fluorescent DNA dye. Red: Actin filaments have been labeled with Alexa Fluor-555 phalloidin.