Resolution:
## Figure 4.
State-space analysis of the Teff-Treg loop. The state-space analysis was done with the simplified T-cell population model (eq.
2). The X axis represents the activated Treg population and the Y axis activated Teff
cells. A)By plotting both populations with different levels of α_{R }the equilibrium point moves to higher numbers of Teff cells, remaining practically
the number of Treg cells in the same point.B)State-space plot corresponding to the two extreme values for α_{R}: 0.21 and 2.0, showing an abrupt change in the dynamics.
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