Immunohistochemistry in FLs with and without t(14;18). Representative stainings for CD10, IRF4/MUM1, Ki67, and Granzyme B (GRZMB) in FL grade 1/2 cases with t(14;18) (A, C, E, G) and without t(14;18) (B, D, F, H). (A-B) Images were captured at magnification ×200, and (C-H) at magnification ×400 with the use of an Olympus, Color View, BX50 microscope, the Color View digital camera, and the analysis work soft imaging system (all Olympus).