Fig. 2From: Mesenchymal stem cell-derived exosomes improve motor function and attenuate neuropathology in a mouse model of Machado-Joseph diseaseCharacterization of exosomes derived from iPSC-MSCs. a The NTA of iPSC-MSC exosomes. b Compared with MSCs, the iPSC-MSC exosomes were strongly positive for CD63, TSG101, and Alix as determined by western blot. c The iPSC-MSC exosomes were bilipid-layered particles with a diameter of about 100 nm as shown by TEMBack to article page