Fig. 1.

Morphology and GFP-Luc2 expression in parental hUC-MSCs and transduced hUC-MSCs at 24, 48 and 72 h post-transduction. (a) Transduction of GFP-Luc2 proteins in hUC-MSCs did not cause morphological changes. All images taken at 100x magnification. The scale bars represent 50 μm. The GFP signals were taken with 5.5 s exposure time. (b) Mean fluorescence intensities of transduced hUC-MSCs at 24, 48 and 72 h post-transduction (n = 2).