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. 2019 Nov 20;6:1273–1280. doi: 10.1016/j.toxrep.2019.11.003

Fig. 2.

Fig. 2

Radical scavenging activity of usnic acid. A. DPPH· scavenging assay, B. ABTS•+ scavenging assay, C. DMPD•+ scavenging assay. D. O2•− scavenging assay.