Western blot analyses were performed as described previously and repeated twice.14 (link),32 (link) Primary antibodies used in this study include rabbit polyclonal antibodies to human NS (Ab138, Tsai Laboratory, Houston, TX, USA), p-cdc2 (Y15, Cell Signaling, Danvers, MA, USA), MDM2 (SMP-14, Santa Cruz, Santa Cruz, CA, USA), p53 (DO-1, Santa Cruz), p-histone H3 (S10, Upstate, Lake Placid, NY, USA), and α-tubulin (Sigma). Secondary antibodies were conjugated to peroxidase (Jackson ImmunoResearch, West Grove, PA, USA).
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