Figure 2.

Marker expression profiles from MSC and CPC. Both cell types were respectively stained with four markers in different combinations. The percentage of quadruple stained cells is depicted on the y-axis. Due to the varying patient collectives the number of different donors is declared as n (range). The arrows highlight the marker combinations which showed significance in Student's t-test: CD45-/CD166/CD9/Stro-1 (P = 0.003), CD105/CD34-/CD9/MSCA-1 (P = 0.019). CPC, chondrogenic progenitor cells; MSC, mesenchymal stromal cells.

Joos et al. Arthritis Research & Therapy 2013 15:R119   doi:10.1186/ar4299
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