细胞膜表面成分依附有大分子物质,它们对细胞微环境的通讯,代谢物质的输送,激素、药物和病毒受体等外源物质的识别,均有重要意义。研究细胞表面大分子的结构和功能,常用放射标记法示踪大分子的位置。为不损伤细胞膜,减少同位素进入胞质,作者对比了两种放射自显影的标记方法,其结果如下。 Cell membrane surface composition attached to macromolecules, their communication on the cell microenvironment, the transport of metabolites, hormones, drugs and virus receptors and other foreign substances identification, are of great significance. Research cell surface structure and function of macromolecules, radiolabeling commonly used to trace the location of the macromolecules. To avoid damaging the cell membrane and reducing isotope entry into the cytoplasm, the authors compared two methods of autoradiography, the results of which are as follows.