Fig. 1. The influence of G. mangostana extract on ROS level was determined by nitroblue tetrazolium dye reduction assay. A large black deposit in
neutrophils was classified as a NBT positive cell. A) Neutrophils in normal condition B) Positive neutrophils induced by zymosan presenting large
black deposits within the cells. C) Neutrophils induced by zymosan after incubation with G. mangostana presenting black deposits.