Table 1.

Repopulation mechanisms and their effect on different cell types

Repopulation mechanism	Effect/definition	Type of cells affected
Cell recruitment	Recycling the quiescent cells into the cell cycle	Quiescent cells
Accelerated repopulation	Shortening of cell cycle time	Proliferating stem cells
Loss of asymmetrical division	Symmetrical division of stem cells in mitosis (i.e. two daughter stem cells)	Proliferating stem cells
Abortive division	Limited number of proliferations after which the cell becomes sterile	Proliferating differentiated cells (finitely proliferating cells or doomed cells)