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Si-NORAD induced early apoptosis. (A) Cell apoptosis analysis of HUVEC transfected with si-NORAD by flow cytometry. (B) Intracellular Caspase 3 activity assay. (C) and (D) The protein levels were measured using western blot. GAPDH or β-Tubulin was used as the protein loading control. N = 3–5. *P < 0.05, **P < 0.01, ns, not significant.
