Fig. 2From: Reticuloendotheliosis virus and avian leukosis virus subgroup J synergistically increase the accumulation of exosomal miRNAsExtraction and identification of exosomes from CEFs. a The morphological characterization of exosomes under electron microscopy. The arrow indicates exosomes, 40–150 nm in size. b The purities of exosomes were also verified by western blot with anti-Hsp70, anti-Grp78 or anti-CD81Back to article page