URL：https://www.researchgate.net/profile/Yan_Wu42/publication/273894639/figure/fig5/AS:294677610811400@1447268025993/Structures-of-the-PEG-family-of-molecules-Reprinted-with-permission-from-Elsevier.png
掲載元：https://www.researchgate.net/figure/Structures-of-the-PEG-family-of-molecules-Reprinted-with-permission-from-Elsevier_fig5_273894639
