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(A) Western blot of MCF-7 cells after no treatment (lane a), 0.75 μg/mL NO from DETA/NO liposomes (lane b), 0.75 μg/mL NO from PAPA/NO liposomes (lane c), and 16.2 μg/mL NO from PAPA/NO liposomes (lane d). (B) Densitometric analysis of cyclin B1 levels after 24 h exposure. (C) Densitometric analysis of cyclin D1 levels after 72 h exposure.
