Fig. 2

Comparison of Ki-67 and CD20 expression between mutant group and wild-type group. Representative images of Ki-67 (A, B) and CD20 (C, D). A, Mutant group exhibits higher Ki-67 index; B, Wild-type group has a lower Ki-67 index; C, Mutant group has more CD20 positive cells in the stroma; D Wild-type group barely has CD20 positive cells in the stroma. (Magnification 200x)