Figure 1

SPECT images showing biodistribution of IV administered In-111-oxine, In-111 labeled CTLs and EPCs: Biodistribution of In-111-oxine alone did not showed any difference from 3 to 72 hours, but activity in spleen increased at 72 hours. Labeled CTLs showed high activity in lung at 3 hours and redistribution at 24 and 72 hours. The activity of In-111-CTLs in liver increased from 3 hrs to 72 hours while activity in spleen remained constant. Labeled EPCs showed activity in lung at 3 hours, which is much lower when compared to CTLs. The activity of In-111-EPCs in liver and spleen did not change much with the time (3 to 72 hours).