Fig. 6

a-c Immunohistochemical staining of extranodal marginal zone lymphoma (MALT-oma). CD10 (A) and Bcl-6 (B) staining is negative with low Ki-67 proliferation index (C); in the image B and C recognizable germinal centers which are Bcl-6 positive and have high Ki-67 proliferative index (A-C, magnification 20x) can be seen