Table 1 : The ancient stem cell system of Entamoeba invadens.


Cell type Cell line Conversion capacity Self renewing cells (cycling D1 cells) Cell cycle
duration (in hr.)
Arrested cells (quiescent D2) Terminal differentiation

P p-SRL P/S, PT SRP AGT/6-24 MAP --
T t-SRL -- SRT AGT/6-24 MAT ITD
S s-SRL S/T SRS AGT5-6 MAS ATD

P, S, T: primary, secondary and tertiary stem cells; SRP, SRS, SRT, self-renewing D1 cells belonging to the p-SRL, s-SRL, t-SRL stem cell
lines; MAP and MAT cells, mitotic arrested D2 cells produced by the p-SRL and t-SRL stem cell lines; MAS: Mitotic arrested D2 cells
produced by the s-SRL stem cell line; ITD: Induced terminal differentiation producing ITD cysts; ATD: Autonomous terminal
differentiation (ATD cysts); AGT: Average generation time

Vladimir F Niculescu Stem Cell Biology and Research  2015 2:2DOI : 10.7243/2054-717X-2-2