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Anatomy of Mammalian Conjunctival Lymphoepithelium

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Lacrimal Gland, Tear Film, and Dry Eye Syndromes 2

Part of the book series: Advances in Experimental Medicine and Biology ((AEMB,volume 438))

Abstract

The eye’s external surfaces (conjunctiva and cornea) encounter both airborne and contact pathogens.1 The eyelids, an intermittent barrier, periodically wipe the eye’s surface free of debris and spread the preocular tear film. Aqueous tears from the main and accessory lacrimal glands bathe the ocular surface with lysozyme, lactoferrin, and other factors of innate defense, and deliver monospecific secretory immunoglobulin A (sIgA). Goblet cell-derived and intrinsic mucins mix with the aqueous tears and obfuscate attachment of pathogenic organisms. Meibomian gland-derived lipids lubricate opposing ocular surfaces, and indirectly bolster innate ocular surface defense by delay of aqueous tear evaporation. The conjunctiva and cornea are anatomically proximate, are awash in the same tear film, and encounter the same microbes. Yet, the constitutive immune armaments of the conjunctiva and cornea are dramatically different (Table 1).

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Chodosh, J., Nordquist, R.E., Kennedy, R.C. (1998). Anatomy of Mammalian Conjunctival Lymphoepithelium. In: Sullivan, D.A., Dartt, D.A., Meneray, M.A. (eds) Lacrimal Gland, Tear Film, and Dry Eye Syndromes 2. Advances in Experimental Medicine and Biology, vol 438. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-5359-5_79

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  • DOI: https://doi.org/10.1007/978-1-4615-5359-5_79

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4613-7445-9

  • Online ISBN: 978-1-4615-5359-5

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