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Expression of acetylated histone H4 in SGC-7901. The expression of acetylated histone H4 was increased in the TSA group (25.43 ± 6.07) at 48 h compared with controls (7.12 ± 2.06) as detected by immunocytochemistry (×400). Acetylated histone H4 positive staining was localized in the nuclei and positive signals appeared tan or brown. A: Negative, B: Positive.
