title: Invited commentary.
authors.affiliation: Stem Cell Biology, Keck Graduate Institute, 535 Watson Dr, Claremont, CA 91711, USA. ytang@kgi.edu
authors.forename: Yao Liang
authors.initials: YL
authors.lastname: Tang
mesh_terms: D000818:Animals; D016026:Bone Marrow Transplantation / Q000379:methods*; D006321:Heart / Q000502:physiology; D006801:Humans; D009203:Myocardial Infarction / Q000628:therapy*; D051381:Rats; D012038:Regeneration / Q000502:physiology; D017154:Stromal Cells / Q000637:transplantation