serum protein electrophoresis

例句：

1. 1.The results of the serum protein electrophoresis showed that the patient had a high level of immunoglobulin G.
   血清蛋白电泳结果显示患者免疫球蛋白G水平较高。
2. 2. During the isoelectric focusing step, proteins are separated based on their isoelectric points.
   在等电聚焦步骤中，根据它们的等电点分离蛋白质。
3. 3.The isoelectric precipitation method was used to purify the antibodies from the serum sample.
   使用等电沉淀法从血清样本中纯化抗体。