Bistability in Apoptosis by Receptor Clustering
Figure 9
Cell-level cluster integration.
The apoptotic signals of all Fas clusters are integrated to produce a normalized cell activation . The resulting hysteresis curve on
as a function of the FasL concentration
is graded due to the heterogeneity of the bistability thresholds
across the clusters (top). Despite this variability, a strong linear dependence persists between
(bottom; the valid region
is shown in green).