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Figure 4: (a) Photomicrograph showing cytoplasmic CK7 positivity in luminal cells (CK7, DAB, 40×), (b) Photomicrograph showing cytoplasmic S100 positivity in abluminal cells (S100, DAB, 10×)

Figure 4: (a) Photomicrograph showing cytoplasmic CK7 positivity in luminal cells (CK7, DAB, 40×), (b) Photomicrograph showing cytoplasmic S100 positivity in abluminal cells (S100, DAB, 10×)