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. Author manuscript; available in PMC: 2017 Jan 1.
Published in final edited form as: Prog Retin Eye Res. 2016 Jan;50:108–144. doi: 10.1016/j.preteyeres.2015.10.001

Fig. 43.

Fig. 43

Top: Autoradiograph of optic nerve head with optic disc edema injected with tritiated leucine 12 days before enucleation. Abundant silver grains still present in entire optic nerve head anterior to retrolaminar myelinated optic nerve (ML) (paraphenylenediamine, original magnification x 80). Bottom: Prelaminar and lamina cribrosa regions just anterior to ML under higher magnification. Considerable amount of silver grains still present in axonal bundles (arrows) (paraphenylenediamine, original magnification x 300).