CD4+ T cell dynamics predicted by the one-compartment model with different parameter values.

<p>(A) Sensitivity test on the infection rate <i>k</i>. The value of <i>k</i> increases from 1.44×10⁻⁸ (orange line) to 3.36 ×10⁻⁸ ml virion^-1 day^-1 (black line) with four equal increments. (B) Sensitivity test on the target cell generate rate <i>λ</i>. The value of <i>λ</i> increases from 6000 (orange line) to 14000 cell ml^-1day^-1 (black line) with four equal increments. (C) Sensitivity test on the viral production rate <i>p</i>_<i>v</i>. The value of <i>p</i>_<i>v</i> increases from 15000 (orange line) to 35000 virions cell^-1 day^-1 (black line) with four equal increments. (D) Sensitivity test on <i>γ</i>_<i>i</i>, the effect of cytokines on infection. The value of <i>γ</i>_<i>i</i> increases from 1.2×10⁻⁴ (orange line) to 2.8 ×10⁻⁴ ml molecule^-1 (black line) with four equal increments.