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TGF-β1 and TGF-β2 immunoperoxidase staining in normal optic nerve head, donor age 68 years old. Little or no staining for TGF-β2 is observed. Few blood vessels were stained with TGF-β1 (arrow, E). (A) and (D) Prelaminar region; (B) and (E) lamina cribrosa; (C) and (F) negative controls. vs = vitreal surface; CP = cribriform plates, NB = nerve bundles. ×375.
