Morphological aspects of MSCs and proliferation rates. a) MSCs sorted for CD146 by fluorescence cytometry (DMEM-FACS and ES-FACS) or magnetically (DMEM-MACS and ES-MACS) showed no morphological differences to the control MSCs cultured in DMEM-LG or ES medium. Light microscopy, magnification x100. b) Results displayed are the means and SD of the growth index per day divided by the growth index of control cells for each respective donor. *p < 0.05.