BCL10 and NF-κB protein expression in low-grade gastric MALT lymphomas with and without t(11;18)(q21;q21). (A-C) BCL10. (D-F) NF-κB. (A,D) Nuclear BCL10 and NF-κB expression in H pylori–independent patients with t(11;18)(q21;q21). (B,E) Nuclear BCL10 and NF-κB expression in H pylori–independent patients without t(11;18)(q21;q21). (C,F) Cytoplasmic BCL10 expression and NF-κB expression in H pylori–dependent patients. Original magnification, × 400. An Olympus BX40 microscope equipped with 10×/0.25 and 40×/0.65 objective lenses (Olympus, Tokyo, Japan) was used to visualize images. Pictures were taken with an Olympus DP11 camera, and Adobe Photoshop 6.0 was used to zoom images to their present magnitude (Adobe Systems, San Jose, CA).