Here are the studies and no you never replied back to these.
Shabbit A. Zinn D, Suzuki G, Lee T. Heart failure therapy mediated by the trophic activities of bone marrow mesenchymal stem cells: a noninvasive therapeutic regimen. Am I Physiol Heart Cire Physiol. 2009;296(6);H1888-97, dol: 10.1152/ajpheart.00186.2009
Zhang S,Shpall E. Willerson JT, Yeh ET. Fusion of hematoopotetic progenitor cells and murine cardiomyocytes is mediated by alpha 4 beta 1 integrin/vascular cell adhesion molecule-1 interaction. Circ Res. 2007;100(5)693-702.
While these studies were conducted over several trials they added up to over 1,000 participants each.
Another one, just for the fun of it.
Wang J. Zhang S, Rabinovich B, et al. Human CD34+ cells in experimental myocardial infarction: long-tern survival, sustained functional improvement, and mechanism of action. Circ Res. 2010;106(12):1904-11.oi 10.1161/CIRCREAHA.110.221762.