Triple immuno fluorescence for the macrophage marker CD68, arterial marker smooth muscle actin (SMA), and 4’,6-diamidino-2-phenylindole (DAPI) stain (marks cell nuclei) on hepatocellular carcinoma (HCC) specimens containing tris-acryl gelatin microspheres. The foreign body reaction, as indicated by macrophage number, differs between embolic type and vascular location. Extra = extravascular, Intra = intravascular. Tischfield et al., Radiology 2022.