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. 2014 Jan 16;3(3):299–307. doi: 10.5966/sctm.2013-0120

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Figure 1. — Wharton’s jelly-derived mesenchymal stem cell (WJ-MSC) paracrine signaling effect on the expression of profibrotic genes in human keloid skin fibroblast. (A): One-way paracrine signaling or WJ-MSC-conditioned medium-treated keloid skin fibroblasts versus nonconditioned media-treated keloid skin fibroblasts or control group. (B): Two-way paracrine signaling or Transwell insert system coculture. Results are from six different keloid skin samples. ∗, p ≤ .05; ∗∗, p ≤ .01. Abbreviations: PAI-1, plasminogen activator inhibitor-I; TGF, transforming growth factor.