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. 2014 Mar 25;14:58. doi: 10.1186/1471-2148-14-58

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Copyright © 2014 Zaher et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Head muscles and glands of Dipsadini. Lateral view of the head of Dipsas neivai (IBSP 54935) (A), Sibynomorphus ventrimaculatus (IBSP 17228) (B), Sibon nebulatus (KU 112474) (C), and Tropidodipsas sartorii (KU 157636) (D), showing the location of the infralabial gland (il) with respect to head muscles and mandible. Abbreviations: aem2, muscle adductor mandibulae externus medialis pars posterior; aep, muscle adductor mandibulae externus profundus; aes, muscle adductor mandibulae externus superficialis; ap.aes, aponeurose of muscle adductor mandibulae externus superficialis; du, ducts; Hg, harderian gland; il1, lateral, mucous infralabial gland; il2, ventrolateral, seromucous infralabial gland; ipp, muscle intermandibularis posterior pars posterior; lao, muscle levator anguli oris; sl, supralabial gland; sr, superior rictal gland. Scale bar in all pictures = 2.5 mm.