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The ratio of the In/Sur ratios when the EGFR signaling pathway is stimulated with its ligands EGF and TGF-α at 20 nM ligand concentration. Comparison of the computational (solid lines) and experimental (points) results. Ratio of the ratios for the phosphorylated (i.e., activated) (blue), and total (phosphorylated + unphosphorylated) number (magenta) of receptors.
