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Biodistribution of exosome. A large number of exosomal signals (approx. 250 signals/mm2) can be found in the olfactory nerve starting from one hour after transplantation. The signal can also be found in the olfactory tract, striatum, and midbrain. Note that the Y axis is different between the olfactory nerve and others. The representative figure shows the signal at each area 24 h after exosome administration (bar = 20 μm).
