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Comparison of collagen contraction by early passage versus late passage fibroblasts. A: No difference in collagen contraction over 7 days in FCM between passage 3 versus passage 5 normal conjunctival fibroblasts. B: No difference in collagen contraction over 7 days in FCM between passage 3 and passage 6 actively inflamed pemphigoid conjunctival fibroblasts. n = number of individual experiments.
