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THA-hematoma cells secrete VEGF, IFN-γ, IL-6, IL-8 and MCP-1. THA-hematomas were incubated as indicated; subsequently, the culture supernatants were analyzed for the concentrations of VEGF (a), IFN-γ (b), IL-6 (c), IL-8 (d) and MCP-1 (e). Mann–Whitney U test, n=19, *P<0.05; **P<0.01. IFN-γ, interferon-gamma; IL, interleukin; MCP-1, monocyte chemotactic protein-1; THA, total hip arthroplasty; VEGF, vascular endothelial growth factor.
