title: Mesenchymal stem cell therapy: Two steps forward, one step back.
authors.affiliation: Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Harvard Stem Cell Institute, Harvard-MIT Division of Health Sciences and Technology 65 Landsdowne Street, Cambridge, MA 02139, USA.
authors.forename: James
authors.initials: J
authors.lastname: Ankrum
authors.forename: Jeffrey M
authors.initials: JM
authors.lastname: Karp