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. Author manuscript; available in PMC: 2013 Sep 1.
Published in final edited form as: Curr Eye Res. 2012 May 4;37(9):761–769. doi: 10.3109/02713683.2012.676699

Fig. 2.

Fig. 2

Deep human orbit. A. Masson trichrome stain shows CN3 is still external to the global surface of the medial rectus (MR) muscle. B. Magnified view of region outlined by black square in A, showing entry of small nonclassical (NC) nerve into superior orbital surface of MR. C. High power view of region outlined by black square in B, showing entry and bifurcation of NC nerve within MR orbital layer. D. Adjacent serial section region outlined by black square in B, showing choline acetyltransferase (ChAT) immunoreactivity (brown) in some axons of the NC n. ON - optic n. CN3 – inferior division of oculomotor n. Abbreviations as in Fig. 1.