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Positive control of H3K4me3 staining in placenta tissue with strong nuclear cytoplasmic expression and weak cytoplasmic expression in trophoblastic cells (A); H3K4me3 showed a higher expression in the nucleus than in the cytoplasm (B); T1-stage tumors (C) with significantly lower expression than T2/3/4-stage tumors (D); The summary regarding T-status is shown as a box plot (E). Scale bar 200 µm, small pictures 100 µm.
