Fig. 2From: Development of aqueous two-phase systems-based approaches for the selective recovery of metalloproteases and phospholipases A2 toxins from Crotalus molossus nigrescens venomNaCl concentration effect on the recovery of MPs and PLA2 in PEG–potassium phosphate systems. A Principal component analysis (PCA) analysis of the recovery metalloproteases (MPs) and phospholipases A2 (PLA2) in selected systems at different NaCl concentrations (1, 3 and 5% w/w). Clear circles (○) denote the selected ATPS with the best partition characteristics. B SDS-PAGE of top and bottom phases (T and B, respectively) of selected ATPS from PCA analysis, 15 μg of C. m. nigrescens venom (CMNv) and molecular weight marker (MWM)Back to article page