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Uncoupling protein 2 (UCP2) expression inhibits cell proliferation with G1 phase arrest in Hepa 1–6 cells. This figure shows cell cycle analysis of UCP2-transfected Hepa 1–6 cells by flow cytometry, comparing cell cycle patterns of green fluorescent protein (GFP)-positive versus GFP-negative cells from the same sample transfected with different UCP2 constructs or vector alone, with a posttransfection time of either 48 hr (first 2 rows) or 72 hr (last 2 rows).
