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Cell safety results of drug-free (grey) and drug-loaded (orange) zein fibers on kidney hamster fibroblasts cells after 24 h of incubation. Results presented as relative cell viability (%). White bars represent controls of cells in T solution (T sol) and untreated cells in growth medium (MC). Key: PEO, polyethylene oxide; SA, stearic acid; T, tetracycline hydrochloride; nonT, no tetracycline hydrochloride; Z, zein; error bars represent standard deviations.
