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. 2010 Oct 14;6(10):e1000956. doi: 10.1371/journal.pcbi.1000956

Figure 4. Steady-state activation surface.

Figure 4

The steady-state surface for the active Fas concentration Inline graphic as a function of the FasL and total Fas concentrations Inline graphic and Inline graphic, respectively, is folded, indicating the existence of singularities, across which the system's steady-state behavior switches between monostability and bistability (stable, blue; unstable, red). All parameters set at baseline values unless otherwise noted.