Steady-state IGF-I/IGF-IR, IGF-II/IGF-IR and total IGF-IR complex concentration under various ratios of the half-life of two functional IGFBP groupings.

<p><b>The calculated complex concentrations are normalized to total receptor concentration</b> (<b><i>i.e. c_RT0</i></b><b> = 0.6 nM</b>)<b>.</b> Free IGF half-life = 20 min, , mass transfer coefficient <i>k_BP</i> = <i>k_SC</i> = 5.5×10⁻⁸ m/s, and = 0.066 nM.