. 2016 Aug;57(8):1423–1434. doi: 10.1194/jlr.M067165

TABLE 2.

Mean transit times, residence times, FCRs, and recycling numbers in neonatal rats in D-VARA and M-VA groups as predicted by the plasma-view model

	Treatment Group
Parameters^a	Oil	D-VARA	M-VA
t(5), h	0.40	0.24	0.26
t(6), days	1.64	1.14	1.03
T(5,5), days	2.40	0.18	0.06
FCR(5,5), day⁻¹	0.42	5.56	16.7
FCR(5,5), day⁻¹ (after day 8)	14.7	5.56	16.7
ν(5)	144	17	5

The model is shown in Fig. 3. Oil values taken from (13).

Parameters shown are: mean transit time [t(5)], or the mean of the time that a retinol molecule spends in compartment 5 (plasma retinol-RBP) during a single transit before leaving reversibly or irreversibly; mean transit time [t(6)], or the mean of the time that a retinol molecule spends in compartment 6 (extravascular tissue retinol) during a single transit before leaving reversibly or irreversibly; mean residence time [T(5,5)], or the average of the distribution of times that a molecule of retinol spends in compartment 5 (plasma retinol-RBP) before it leaves irreversibly; FCR(5,5), or the fraction of the plasma retinol pool that is utilized each day; recycling number [ν(5)], or the average number of times a retinol molecule recycles through compartment 5 (plasma retinol-RBP) before it irreversibly exits from it.