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Structure and toxicity of PIC. A. Chemical structure of PIC. B-D. Cytotoxicity of PIC in HUVECs determined by CCK-8 assay at different concentrations for 8, 24 or 48 hours. PIC was not toxic to HUVECs at 10 or 25 μM. Values are expressed as means ± SD ***P < 0.05, vs. control group (0 μM).
