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. Author manuscript; available in PMC: 2015 Jan 1.
Published in final edited form as: Biochim Biophys Acta. 2013 Apr 6;1844(1 0 0):10.1016/j.bbapap.2013.03.023. doi: 10.1016/j.bbapap.2013.03.023

Fig. 12.

Fig. 12

Depending on small changes in the parameter µ, the two-variable cytokine system in Eq. (8) exhibits oscillations that are damped (panel a; µ = −0.2) or constitute a stable limit cycle (panel b; µ= 0.04).