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Tissue transglutaminase is demonstrated to be the unknown endomysial autoantigen by means of immunoprecipitations from a fibrosarcoma cell culture. A novel hypothesis for the pathogenesis of celiac disease is formulated: The mainly intracellular tissue transglutaminase is released from cells during wound healing where it aids in stabilizing the wound area by cross-linking a small set of extracellular matrix components.
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Schuppan et al. (1998) studied this question.
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