SDS-PAGE and BioRad Agarose Image Pattern Analysis System were applied to examine the rHla expression. Ni-NTA affinity chromatography was performed to collect rH1a.

• 采用SDS-PAGE和BioRad凝胶图象分析系统检查rH1a表达情况,Ni-NTA亲和层析法收集rH1a。