Fig. 1
From: Short cell cycle duration is a phenotype of human epidermal stem cells
In vitro, individual adult human keratinocytes produce colonies that either continue to expand exponentially or undergo terminal differentiation. (A) Sample expanding and differentiating colonies at near the beginning and end of imaging. Scale bar 400 μm. (B) Total number of generations before terminal differentiation, or till end of observation. (C) Number of colonies of different sizes for expanding and differentiating colonies. (D) Plot of cell number over generations, for expanding and differentiating colonies. EXP: expanding colonies. DIF: differentiating colonies