But, to be sure the immune-shielding proteins were still there, the team used two special techniques, immunofluorescence and western blotting, to check for their presence.

但是，为了确保免疫屏蔽蛋白仍然存在，研究小组使用了两种特殊技术--免疫荧光和蛋白质印迹法--来检查它们是否存在。