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Figure 2 | The Journal of Headache and Pain

Figure 2

From: Expression of 5-HT3 receptors and TTX resistant sodium channels (NaV1.8) on muscle nerve fibers in pain-free humans and patients with chronic myofascial temporomandibular disorders

Figure 2

A low power (10 x) (in A) and a high power (40 x) (in B) image of the same section of a masseter muscle (microbiopsy from a pain-free volunteer). A. The arrows indicate individual muscle fascicles composed of myocytes separated by connective tissue. B. A higher power (40 x, rounded square in A) image of PGP 9.5 labelling with examples of fibers associated with myocytes (arrows) and connective tissue (double arrows). The insets show examples of a PGP 9.5 positive fiber associated with a myocyte (i) and with connective tissue (ii). Calibration bar A: 100 μm, B: 25 μm.

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The Journal of Headache and Pain

ISSN: 1129-2377

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