Figure 3.

Representative photomicrographs. Immunohistochemical expressions for histone deacetylase 1 (HDAC1), acetyl-histone H3 (H3Ac) and acetyl-histone H4 (H4Ac) in breast invasive ductal carcinomas (IDC) and fibroadenomas (FA) (×400). (A), (C), (E) breast fibroadenomas; (B), (D), (F) breast invasive ductal carcinoma. Immunostained for HDAC1 (A, B), H3Ac (C, D) or H4Ac (E, F). nuclear staining (arrow).