Figure 3From: Attenuation of oxidative stress in U937 cells by polyphenolic-rich bark fractions of Burkea africana and Syzygium cordatum Inhibition of AAPH-induced lipid peroxidation in U937 cells pre-treated with crude extracts and polyphenolic-rich fractions. Legend: A) B. africana and B) S. cordatum; PC = Positive control (H2O2); solid and dashed lines represent negative control and AAPH-treated cells, respectively; control vs AAPH: a – p < 0.001; AAPH vs sample: *** – p < 0.001, ** – p < 0.01, * – p < 0.05.Back to article page