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. 2019 Oct 24;16:39. doi: 10.1186/s12983-019-0337-6

Fig. 2.

Fig. 2

Palpal organs of Liphistius sp., and Davus fasciatus; external morphology (a,d), histology (b,e), and ultrastructure as documented by TEM (c,f). Arrows indicate planes chosen for semithin sections (b,e). Boxes in B and E show areas in the palpal organ where profiles of the bulb nerve were found. TEM micrographs in C and F show ultrastructural details of the bulb nerve. Abbreviations: B Bulb, BNv Bulb nerve, Cu Cuticle, Cy Cymbium, E Embolus, Gli Glial cell processes, HS Haemolymph space, Htd Haematodocha, Mt Mitochondrium, Ne Neurite, NeB Neurite bundle, N Nucleus of glial cell