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Identification of exosomes from stem cells of the apical papilla (SCAP-Exo). (a) Morphology of SCAP-Exo (yellow arrow) based on transmission electron microscopy. (b) Size distribution of particles in the pellet as measured by nanoparticle tracking analysis. (c) Western blot analysis showing that SCAP-Exo were positive for the exosomal-specific markers CD9 and Alix.
