Figure 4: SDS-PAGE analysis of BSA precipitation by TCA. Lane: 1, 2.00% TCA; 2, 5.78% TCA; 3, 1.35 % TCA; 4, 3.95%w/v TCA; 5, 4.35% TCA; 6, 2.50% TCA; 7, 0.95% TCA; 8, 5.30% TCA; 9, 3.18% TCA; 10, 10.00 %TCA; 11, 20.00% TCA.