Fig. 1

Characterization of BM-MSCs and SM-MSCs using flow cytometric quantification of cell surface marker expression. a Expression of cell surface markers expected to be positive in MSC populations and b expression of cell surface markers expected to be negative in MSC populations. The white histograms represent isotype controls and black histograms represent respective cell surface marker staining. The mean ± SEM percentage of positive cells is in the corner of each histogram. Each histogram is a representative result of 5 horses