Donor cell localization in the lung of the P 21 rats.
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(A): Fluorescent microscopic observation of the PKH26 labeled human UCB-derived MSCs (donor cells, red) localized in the lungs of the P 21 newborn rats and the nuclei labeled with DAPI (blue) (Scale bar; 25 µm). (B): Number of PKH26 positive cells in the lung per high power field. NC, Normoxia control group; HC, hyperoxia control group; HT3, hyperoxia with stem cell transplantation group at P3; HT10, hyperoxia with stem cell treatment group at P10; HT3+10, hyperoxia with stem cell treatment group at P3 and P10. Data; mean±SEM. † P<0.05 compared to HT3.