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Medians of the growth factors measured with ELISA for ATE and PRP patient samples. Number of samples: for PRP n = 9 except for KGF n = 10, and for PDGF-B n = 8; for ATE n = 13 except for PDGF-B n = 11. The statistical analysis was performed with two-tailed unpaired t-test. Results were considered significant when p < 0.05*, p < 0.01**, p < 0.001***
