The Glutathione S Transferase PtGSTF1 Improves Biomass Production and Salt Tolerance through Regulating Xylem Cell Proliferation, Ion Homeostasis and Reactive Oxygen Species Scavenging in Poplar glutathione S transferase The Glutathione S Transferase PtGSTF1 Improves Biomass Production and Salt Tolerance through Regulating Xylem Cell Proliferation, Ion Homeostasis and Reactive Oxygen Species Scavenging in Poplar Glutathione S Transferase (GST) Activity Assay Kit (DTNB Method) MSE Supplies X ray structure of glutathione S transferase from the malarial parasite Plasmodium falciparum PNAS GST Assay Kit (Colorimetric)