The consortium will develop methods to manipulate endogenous stem cells as well as cultured multipotent stem cell populations that can be grafted to enable non-invasive imaging of migration and survival of the cells in vivo, and to also enhance migration and survival. In a second platform multimodality imaging will be developed to allow in a non-invasive manner to follow the fate of stem cells in vivo. Some of these imaging modalities. here focused around stem cells. should be readily translatable to the clinic both to follow stem cell fate, but also outside of the area of stem cell research as we believe that some of the technical optimization of CT-scan, PET-scan and MRI based non-invasive imaging should have much broader applications. Moreover, development of genetic and direct labeling methods of stem cells to allow following their fate as well as modify their fate should prove very useful for studies aimed at testing the effect of drugs on stem cell or more diffentiated cell behavior in vivo.