Parameter | Meaning | Units |
---|---|---|
CBC | Number of crypt-base columnar cells | None |
TAC | Number of transit-amplifying cells | None |
AP | Number of absorptive progenitor cells | None |
EC | Number of enterocytes | None |
SP | Number of secretory progenitor cells | None |
EEC | Number of enteroendocrine cells | None |
TC | Number of tuft cells | None |
GPP | Number of goblet / Paneth progenitor cells | None |
GC | Number of goblet cells | None |
PC | Number of Paneth cells | None |
k 1 | Crypt-based columnar cell to transit-amplifying cell differentiation rate | day-1 |
k 2 | Transit-amplifying cell to absorptive progenitor differentiation rate | day-1 |
k 3 | Transit-amplifying cell to secretory progenitor differentiation rate | day-1 |
k 4 | Secretory progenitor to goblet / Paneth progenitor cell differentiation rate | day-1 |
k 5 | Absorptive progenitor to enterocyte differentiation rate | day-1 |
k 6 | Secretory progenitor to enteroendocrine cell differentiation rate | day-1 |
k 7 | Secretory progenitor to tuft cell differentiation rate | day-1 |
k 8 | Goblet / Paneth progenitor to goblet cell differentiation rate | day-1 |
k 9 | Goblet / Paneth progenitor to Paneth cell differentiation rate | day-1 |
α | Crypt-based columnar cell proliferation rate | day-1 |
β | Transit-amplifying cell proliferation rate | day-1 |
γ | Absorptive progenitor cell proliferation rate | day-1 |
δ | Secretory progenitor cell proliferation rate | day-1 |
ζ | Goblet / Paneth progenitor cell proliferation rate | day-1 |
λ 1 | Loss rate of enterocytes | day-1 |
λ 2 | Loss rate of enteroendocrine cells | day-1 |
λ 3 | Loss rate of tuft cells | day-1 |
λ 4 | Loss rate of goblet cells | day-1 |
λ 5 | Loss rate of Paneth cells | day-1 |
N | Total number of cells per crypt / villus unit | None |
N c | Total number of crypt cells per crypt / villus unit | None |
N v | Total number of villus cells per crypt / villus unit | None |