Fig. 4

Detection of UC-MSCs in a recipient’s biopsy sample by a multiprobe FISH assay. No UC-MSCs with chromosomes “XY” were found in a female recipient’s biopsy sample. A The female recipient’s biopsy sample showed two red signals representing chromosomes “XX”. Original magnification of FISH images, oil objective (×100). B The FISH assay showed one red and one green signals representing chromosomes “XY” in a control male recipient’s biopsy sample. Original magnification of FISH images, oil objective (×100)