Figure 3From: Recombinant d-galactose dehydrogenase partitioning in aqueous two-phase systems: effect of pH and concentration of PEG and ammonium sulfateResponse surface plot of SA. As a function of (a) PEG-4000 and (NH4)2SO4 concentrations, (b) pH and PEG-4000 concentrations, and (c) pH and (NH4)2SO4 concentrations.Back to article page