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Figure 4: (a) CK-7 positivity in tumor cells (IHC, ×200); (b) tumor cells negative for CK-20 (IHC, ×200); (c) GCDFP-15 positivity in scattered tumor cells (IHC, ×200)

Figure 4: (a) CK-7 positivity in tumor cells (IHC, ×200); (b) tumor cells negative for CK-20 (IHC, ×200); (c) GCDFP-15 positivity in scattered tumor cells (IHC, ×200)