Fig. 6From: Quantitation of glutathione S-transferases in rice (Oryza sativa L.) roots exposed to cadmium by liquid chromatography–tandem mass spectrometry using isotope-labeled wing peptides as an internal standardThe temporal and dose responses of OsGSTF14 (a) and OsGSTU6 (b) proteins in Cd-stressed rice roots. Letters a–d indicate the difference among Cd treatments is significant at 0.05 levelBack to article page