Samples prepared by TCA-Acetone precipitation,obtained more and clearer protein spots,and higher resolution and better reproducibility of the electrophoretic map.

• TCA-丙酮沉淀法所制备的蛋白样品,电泳图谱所获蛋白斑点数目较多,斑点较清晰,分辨率较高,重复性较好。