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Plate 1: Representative morphology of HL-60 human acute promyelocytic leukemia cells on Wright-stained cytospin slides after 7 days of incubation (A) control; (B) with sodium butanoate (1 × 10-4 M); (C) with retinoic acid (1 × 10-5 M); (D) with RFUdR (1 × 10-5 M); (E) BTCEP-BFUdR (1 × 10-6 M). |