Figure 2
From: Parameter estimation in biochemical systems models with alternating regression

Test system with four dependent variables. (a) time courses computed with initial values in Eq. (12) (use dataset 1 in Table S1); (b) corresponding dynamics of slopes. Typical units might be concentrations (e.g., in mM) plotted against time (e.g., in minutes), but the example could as well run on an hourly scale and with variables of a different nature.