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(A) Closure of 6-mm punch biopsy wounds on the back skin of wild-type and Col7a1-hypomorphic mice over time. Scale bar: 2 mm. (B) Quantification of the wound area showed significantly delayed gross wound closure between days 3 and 9. n = 14 wounds per group; values represent mean ± SD. *P < 0.05; ***P < 0.001.
