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. Author manuscript; available in PMC: 2018 Sep 21.
Published in final edited form as: J Theor Biol. 2017 Jun 29;429:190–203. doi: 10.1016/j.jtbi.2017.06.033

Table 1.

Notations used to calculate W, the fraction of active SCs.

%SCq The percentage of all of the stem cells that are at the bottom of the crypt, e.g. quiescent stem cells
%SCa The percentage of all of the stem cells that are above the bottom of the crypt, e.g. active stem cells in the region of dividing cells
#SCq The number of quiescent stem cells at the bottom of the crypt
#SCa The number of active stem cells above the bottom of the crypt in the region of dividing cells
#Ki67+ The total number of dividing cells