The studies of Pittenger et al. and Lapi et al. did not specify how MSCs were defined as positive or negative for a given marker. Only Dominici's study strictly defined the positive or negative reacti
Primary fibroblasts were extracted from the ears/pinnae of three young C57BL/6 mice of each sex (male and female) from the NIA. Cells were frozen at the end of passage 3 and then thawed for analysis b
