The water-soluble, urea-soluble and intrinsic membrane proteins ( WSP, USP and MIP) from human clear, cortical punctate opaque and senile cataract lenses were studied by gel filtration and SDS-PAGE. 对老年透明晶状体和老年性白内障晶状体水溶性蛋白(WSP)、尿素溶蛋白(USP)和纤维细胞膜内在蛋白进行了分析。