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Ki67 proliferation index grouped by the results of different pathological markers, including Napsin-A (A), TTF-1 (B), CK-7 (C), ALK (D), mutant EGFR (E) staining, and growth pattern (F).
Notes: **P<0.05, statistical significance; #P>0.05, no statistical significance.
Abbreviations: TTF-1, thyroid transcription factor-1; CK-7, cytokeratin-7; EGFR, epidermal growth factor receptor; ALK, anaplastic lymphoma kinase.
