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. 2022 Aug 29;16:981426. doi: 10.3389/fnana.2022.981426

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Copyright © Fede, Petrelli, Pirri, Neuhuber, Tiengo, Biz, De Caro, Schleip and Stecco.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Nerve fibers penetrating the connective tissue. Innervation in a free floating superficial fascia of the abdomen region, by anti-S100 antibody. (A) The wall of the blood vessel (v) is richly innervated, and some nerve fibers enter inside the connective tissue (c) of the SF, as shown in the box, enlarged in (B). Panel (C) shows the same anti-S100 reaction in paraffin-embedded 5 μm section. The arrows indicate the nerve fibers. v, blood vessel; c, connective tissue; a, adipocyte. Scale bars: (A) = 200 μm; (B) = 100 μm; (C) = 50 μm.