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. Author manuscript; available in PMC: 2012 Aug 10.
Published in final edited form as: Arch Pharm Res. 2012 Aug 3;35(7):1259–1267. doi: 10.1007/s12272-012-0717-3

Fig. 1.

Fig. 1

The scavenging free radical activity of gRb1 in a cell-free chemical system was detected by ESR spectroscopy. (A) The scavenging DPPH radical activity of gRb1. The intensity of DPPH ESR signals was decreased when addition of gRb1 (4 mg/mL). (B) The scavenging hydroxyl radical activity of gRb1. The intensity of ESR spectra of DMPO-OH adducts was attenuated in a dose-response fashion after addition of gRb1 (0.5, 1 and 2 mg/mL) in H2O2/Fe2+ chemical reaction system. Data were recorded as described in the Materials and Methods.