Figure 2
Bioluminescence imaging of cell survival. A. Cell viability decreases with increasing peroxidase activity in vitro. B. The presence of 3-8 peroxidase activity units for 30 minutes reduces cell survival to less than 20%. C, D. Cells injected into mice on Day 0 post ischemia show little viability by Day 1. E. In contrast, stem cells implanted on Day 14 post ischemic injury show significantly improved survival.