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. 2016 Feb 18;4:10. doi: 10.3389/fcell.2016.00010

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Copyright © 2016 Kier.

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) or licensor 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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Schematic diagram of left arm of a loliginid squid. AN, axial nerve cord; ACT, aboral connective tissue (fibrous); AR, artery; BV, superficial brachial vein; DCT, dermal connective tissue; EP, epithelium; IN, intramuscular nerve cord; LM, longitudinal muscle; OCT, oral connective tissue (fibrous); OM, oblique muscle; PM, protective membrane; SKLM, swimming keel longitudinal muscle; SKTM, swimming keel transverse muscle; SLM, superficial longitudinal muscle; SU suckers; TM, transverse muscle; TR, trabeculae of transverse muscle. From Kier (1982).