Table 3
Characteristic of cells
	Normal human pancreatic β cells	IPCs
Length (μm)	55.46 ± 4.84	73.45 ± 2.08*
Width (μm)	34.71 ± 1.57	40.78 ± 1.09*
Height (nm)	505.39 ± 12.01	421.46 ± 19.25*

*Compared with normal human pancreatic β cells, the difference was significant, P < 0.05.

Shi et al. Nanoscale Research Letters 2013 8:90   doi:10.1186/1556-276X-8-90