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M R Hernandez, N Wang, N M Hanley, A H Neufeld; Localization of collagen types I and IV mRNAs in human optic nerve head by in situ hybridization.. Invest. Ophthalmol. Vis. Sci. 1991;32(8):2169-2177.
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Using in situ hybridization, individual cells expressing mRNAs for collagen types I and IV were localized in fixed-tissue sections of adult and fetal human optic nerve heads. Astroglial cells lining the cribriform plates and cells inside the cribriform plates of the lamina cribrosa had mRNA for collagen type IV. Cells in the glial columns, pial septa, and vascular wall also contained mRNA collagen type IV. Collagen type I mRNA was expressed by cells of the cribriform plates of the lamina cribrosa of adults. Few cells in the glial columns, pial septa, and blood vessels had mRNA for collagen type I. Scleral fibroblasts contained mRNA for collagen type I. These results indicated that the expression of mRNA for both collagen types I and IV paralleled the localization of these extracellular matrix proteins in the optic nerve head and suggested that both collagen types were synthesized in this tissue throughout life.
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