Fig. 6From: Tracking embryonic hematopoietic stem cells to the bone marrow: nanoparticle options to evaluate transplantation efficiencyMagnetic resonance intensity changes in bone marrow following injection of labeled CCE-HPCs. MRI of right tibia in mouse before and at various time points following injection with 7 × 106 labeled CCE-HPCs. Slices selected to display equivalent regions in right tibia, where bone marrow is observed to darken 6–9 days following injection (arrows). Both tibias and femurs of three mice used in measurements shown. Next, difference between each time point and “before” scan calculated by subtraction. Plot shows average of this difference from “before” scan, with error bars indicating standard deviation. Comparing in this manner, significant differences observed for day 6 (*p < 0.1) and day 9 (**p < 0.05) (n = 3). A.U. arbitrary units, MR magnetic resonanceBack to article page