Fig. 6From: Sarcandra glabra (Caoshanhu) protects mesenchymal stem cells from oxidative stress: a bioevaluation and mechanistic chemistryThe dose response curve of rosmarinic acid (RA), astilbin (AS) in the Fe2+-chelating assay (a), the UV spectra of AS-Fe2+ complex (b), RA-Fe2+ complex (c). In figure a, each value is expressed as Mean ± SD (n = 3). Sodium citrate was used as positive controlBack to article page