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. 2019 Nov 13;14(11):e0224434. doi: 10.1371/journal.pone.0224434

Fig 10. High resolution TEM showed an absence of microtubules in fusing neurons.

Fig 10

A conventional stromal nerve bundle (A) in which the inset is enlarged (B) to show cross-sectional views of microtubules identified by their size and distinctive hollow-ring appearance (arrows). Mitochondria are also present and identified by their double-membranes and internal cristae (*). A fusing nerve bundle (C) with an electron translucent axoplasm in which the inset is enlarged (D) to show the distinct lack of microtubules and mitochondria. Scale bar for panels A & C = 2 μm. Scale bar for panels B & D = 0.2 μm.