Western blot assay was performed as previously described [48 (link)]. Antibodies used include: mouse anti-p53 DO-1 (Santa Cruz Biotechnology, Santa Cruz, CA), Rabbit anti-MDM4 (Bethyl Laboratories), mouse anti-BAX (Invitrogen), mouse anti-a-tublin (Santa Cruz) and mouse anti-β-actin (Sigma Aldrich).
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