Colony formation by hACL-SCs and hMCL-SCs. A. hACL-SC colonies. B. hMCL-SC colonies. It is evident that hACL-SCs formed fewer colonies than hMCL-SCs. C. A sample colony of hACL-SCs. D. A sample colony of hMCL-SCs. Notably, the hACL-SC colony is much smaller than the hMCL-SC colony. Note that the results shown here were obtained from a 27-year-old male donor. (Bar: 100 μm).