Table 2.

Colony numbers and population doubling time in mesenchymal stem cells derived from different sources

MSC	PDT (h)	Colony (N)
Bone marrow	31.3±2.4 a	130.0±6.8 a
Adipose tissue	70.7±1.3 b	93.4±15.4 b
Liver	28.0±2.0 a	133.0±6.8 a

^{a, b}Numbers with different superscript in the same column differ significantly p<0.001