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Dose-response curves of baicalein in the •OH-scavenging assay (A) and in PTIO•-scavenging assay (B). PTIO•-scavenging assay was conducted at pH 5.0, 6.0, 7.4, 8.0, and 9.0. Trolox served as positive control. Each value is expressed as the mean ± SD, n = 3.
