点击放大双臂-聚乙二醇-甲基丙烯酸酯（n=4）2-Arm-PEG-Methacrylate (n=4, per arm); 2-Arm methacrylate-functionalized discrete poly(ethylene glycol) (PEG arm n=4)
点击放大三臂-聚乙二醇-甲基丙烯酸酯（n=4）3-Arm-PEG-Methacrylate (n=4, per arm); 3-Arm methacrylate-functionalized discrete poly(ethylene glycol) (PEG arm n=4)
点击放大四臂-聚乙二醇-甲基丙烯酸酯（n=4）4-Arm-PEG-Methacrylate (n=4, per arm); 4-Arm methacrylate-functionalized discrete poly(ethylene glycol) (PEG arm n=4)
点击放大六臂-聚乙二醇-甲基丙烯酸酯（n=4）6-Arm-PEG-Methacrylate (n=4, per arm); 6-Arm methacrylate-functionalized discrete poly(ethylene glycol) (PEG arm n=4)
