Figure 3.
(A–C) Immunohistochemical analysis of Kit, Ki-67, and apoptotic protease-activating factor (APAF)-1 in gastrointestinal stromal tumors. (A) Positive immunostaining of Kit was mainly in the cytoplasm. Original magnification 100× (A1); original magnification 400× (A2). (B) Positive immunostaining of Ki-67 was mainly in the nucleus. Original magnification 100× (B1); original magnification 400× (B2). (C) Positive immunostaining of APAF-1 was mainly in the cytoplasm. Original magnification 100× (C1); original magnification 400× (C2).