Cancer cell death induced by FA‐conjugated polymers and their corresponding parent polymers complexed with pEF‐TRAIL or EGFP plasmids was determined using the MTT assay at 72 h; although expression typically reaches maximal values at 48 hr (e.g., Figure 1), we determined viability at 72 to allow sufficient time for the expressed TRAIL protein to carry out its function. The gene discussed is TNFSF10; the disease is cancer.