点击放大四臂-聚乙二醇-氨基（n=45）4-Arm-PEG45-NH2; 4-Arm primary amine-functionalized discrete poly(ethylene glycol) (PEG arm n=45)
点击放大双臂-聚乙二醇-氨基（n=45）2-Arm-PEG-NH2 (n=45, per arm); 2-Arm primary amine-functionalized discrete poly(ethylene glycol) (PEG arm n=45)
点击放大三臂-聚乙二醇-氨基（n=45）3-Arm-PEG-NH2 (n=45, per arm); 3-Arm primary amine-functionalized discrete poly(ethylene glycol) (PEG arm n=45)
点击放大六臂-聚乙二醇-氨基（n=45）6-Arm-PEG-NH2 (n=45, per arm); 6-Arm primary amine-functionalized discrete poly(ethylene glycol) (PEG arm n=45)
点击放大八臂-聚乙二醇-氨基（n=45）8-Arm-PEG-NH2 (n=45, per arm); 8-Arm primary amine-functionalized discrete poly(ethylene glycol) (PEG arm n=45)
