YWHAZ and myasthenia gravis: The changed exosome‐microRNAs target genes involve in cell cycle, Toll‐like receptor signalling pathway, MAPK signalling pathway, etc Additionally, exosomes from MG‐infected CP‐II cells alter the dynamics of the DF‐1 cells and may contribute to pathology of the MG infection via exosomal gga‐miR‐451 targeting YWHAZ involving in inflammation.