Cell preparation, antibody staining and flow cytometry were performed as described previously [8 (link)–10 (link), 31 (link)]. Briefly, the MSCs were detached with TrypLE, resuspended in PBS plus 5% BSA (bovine serum albumin, Sigma) and incubated with anti-CD317-PE (Thermo Fisher Scientific), anti-CD73-FITC, anti-CD90-FITC, anti-CD105-FITC, anti-CD45-FITC, anti-CD34-FITC, anti-CD19-FITC, anti-CD11b-FITC, anti-HLADR-FITC, IgG-PE or IgG-FITC (all from BD Biosciences). Data were collected with BD AccuriC6 Plus (BD Biosciences) and analyzed with FlowJo software.
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