Figure 2From: In vitro antioxidant and antiproliferative activities of plants of the ethnopharmacopeia from northwest of Mexico Ferric reducing antioxidant power assay (FRAP assay) of Krameria erecta , Struthanthus palmeri , Phoradendron californicum , Senna covesii and Stegnosperma halimifolium methanolic extracts. The results are expressed as mg Eq of Trolox. The bars represent the standard deviation (mean ± SD; n = 3). Significant differences (p < 0.05) are indicated by different letters (a–c).Back to article page