APRIL is strongly expressed in DLBCL lesions. DLBCL tumor lesions were stained with Aprily-2 (left) and Stalk-1 (right). Representative tumor lesions with high (top) and low (bottom) expression of APRIL are shown. Original magnification was × 63. Concentration of the Aprily-2 staining on cells with a morphology reminiscent of DLBCL was marked with an arrow.