Fig. 4
From: Antioxidant and chemoprotective potential of Streptomyces levis strain isolated from human gut
DNA Nicking assay; Lane 1: Negative control (only DNA); Lane 2: Fenton’s reagent; Lane 3: Positive control (rutin, 10 μg); and Lane 4–8: Fenton’s reagent + 2, 4, 6, 8 and 10 μg of the EtOAc extract of HFM-2; Form I = Supercoiled; Form II = Single strand nicked DNA and Form III = Linear