Injection Site No. of Stem Cells Activity Myocardium 4.6 ± 2.0 million 1.3 ± 0.9 MBq Left Ventricle 5.5 ± 1.5 million 1.5 ± 0.8 MBq Tail Vein 6.0 ± 0.8 million 3.6 ± 2.6 MBq

Table 1: Number of stem cells measured using the trypan-blue (0.4%) exclusio assay and the amount of activity injected as measured using a dose calibrator for three injection methods. Values given in mean ± standard deviation.