METHODS: The HMW, MMW, and LMW subforms were measured using a validated in-house time-resolved immunoflourometric assay after separation by fast protein liquid chromatography.

• 方法：先用快速蛋白液相色谱法分选HMW,MMW,和LMW亚型，再用时间分辨免疫荧光法检测三种亚型的含量