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Enrichment of GFP-expressing cells with FACS. Initial sorting yielded only 1.65% GFP-expressing 7ko-MMP-7 fibroblasts (A) and 3.11% 7ko-vector fibroblasts (B). After three sequential sortings, the population of GFP-expressing cells exceeded 90% purity for both the 7ko-MMP-7 (C) and 7ko-vector group (D).
