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POCR showing enhanced antioxidant properties relative to POC. (A) Free radical inhibition by POCR is dependent on the atRA content in the polymer as per the DPPH radical scavenging assay. (B) POCR chelates iron ions. (C) The degree of inhibition of lipid peroxidation by POCR is proportional to retinoid content in the polymer. N = 3, Mean ± SD. *p < 0.05, **p < 0.01, ***p < 0.001.
