%0 Journal Article %T Challenges for mesenchymal stromal cell therapies %J - %D 2018 %R 10.1126/scitranslmed.aat2189 %X Clinical trials of mesenchymal stromal cell therapies reveal a challenging heterogeneous landscape, including diverse therapeutic targets, patient categories, cell sources, and potential mechanisms of action %U http://stm.sciencemag.org/content/11/480/eaat2189