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Line 1: − ~DeusExMachinadanhfails+ − oh, and kangaroos+
Reverted edits by TyroneB (Talk); changed back to last version by Fox
'''Collagen''' is any of a class of extracellular [[protein]]s abundant in higher [[animals]], forming strong insoluble [[fiber]]s and serving as connective [[tissue]] between [[cell]]s, yielding [[gelatin]] when denatured by boiling. It is widely used in [[cosmetic]] surgery.
[[Category:Health]]