Objective:To investigate the effect and mechanism of the gastric cancer cells-derived exosome miR-382-5p in-duced by Helicobacter pylori(H.pylori)on the autophagy and polarization of macrophages,providing new clues for further elucidating the carcinogenic mechanism of H.pylori.Methods:Ultracentrifugation and exosome extraction kit were used to extract the exosomes re-leased by the H.pylori stimulated group and the blank control group AGS cells cells,then transmission electron microscopy(TEM),nanoparticle tracking analysis(NTA)and Western blot w...