Figure 1From: Positive periodic solutions for a model of gene regulatory system with time-varying coefficients and delays Numerical solutions \(\pmb{x(t)=(x_{1}(t),x_{2}(t))^{T}}\) of system ( 4.1 ) for initial value \(\pmb{\varphi(s)\equiv(5,4)^{T}, (3,2)^{T}, (0.5,0.5)^{T}}\) , \(\pmb{s\in [-2,0]}\) . Back to article page