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. 2017 May 5;13:1744806917710779. doi: 10.1177/1744806917710779

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© The Author(s) 2017

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 6. — Immunoreactivity of muscarinic acetylcholine M2 receptor (M₂ mAchR) and neurofilament protein-200 (NF-200) in the trigeminal ganglion (TG) neurons innervating facial skin. (a) Floresence micrograph showing retrograde FG-labeled TG neurons innervating Facial skin. (b) M₂ mAchR immunoreactive TG neurons in the same section. (c) NF-200 immunoreactive TG neurons in the same section. (d) Merged. A typical example of an FG-labeled TG neuron expressing M₂ mAchR is indicated by filled triangles. A typical example of FG-labeled TG neurons co-expressing M₂ mAchR and NF-200 are indicated by arrows. (e) Histogram showing the cell size spectrum of M₂ mAchR and NF-200 positive FG-labeled TG neurons in the trigeminal ganglia.