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Pro MMP-1 secretion. Pro MMP-1 secretion was measured from conditioned medium by ELISA. RAFT TE constructs contained either normal hLF (black bars) or dFib (gray bars). Conditioned medium was collected from RAFT TEs with or without hLE from nonairlifted and airlifted (AL) RAFT TEs. None of these results are statistically significant. n=3±SD. ELISA, enzyme-linked immunosorbent assay; SD, standard deviation.
