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Growth factor release between the observation time points (n = 5). Day 0–3 samples were assessed on Day 3 after being washed on Day 0, and Day 3–5 samples were assessed on Day 5 after being washed on Day 3. (A) Transforming growth factor β1 (TGF-β1) and (B) platelet-derived growth factor (PDGF-AA) levels were assayed, and all the values were more than half of that of the same condition when assessed without being washed out.
