Fig. 3

Tracking of labelled hUC-MSCs in mice testis A: Detection of CFDA-SE labelled hUC-MSCs under fluorescence microscope in mice testis at different time points after injection. The green signals in the frozen section represent the labeled hUC-MSCs; B: Detection of CD73 and STEM121 in mice testis with positive hUC-MSCs 1 week after the injection. Green signals indicated the CD73-stained hUC-MSCs, red signals indicated STEM121-stained hUC-MSCs and blue signals indicated DAPI-stained nuclei