Fig. 3: Predicted maximum pSTAT3, pAkt, and pERK responses.

Maximum pSTAT3 (A), pAkt (B), and pERK (C) in response to IL-6 concentrations varying from 0 to 5 nM without sIL-6R. In the absence of IL-6R, 2 nM IL-6 in combination with sIL-6R concentrations varying from 0 to 100 nM induced maximum pSTAT3 (D), pAkt (E), and pERK (F). Curves are the mean values of the 12 best fits. Shaded regions show 95% confidence intervals of the fits. Orange: classic signaling responses; Yellow: trans-signaling responses.