The article discusses the usage of PLA-PEG for nanoparticle drug delivery. Find these polymers at www.polyvivo.com, go to the link below or to the original source for full-text for the article. (note the below article did not not necessarily use an Akina product for this research). Abstract in image.
M. Tobío, R. Gref, A. Sánchez, R. Langer, M.J. Alonso, Stealth PLA-PEG Nanoparticles as Protein Carriers for Nasal Administration. Pharmaceutical Research 15(2) (1998) 270-275. http://www.springerlink.com/content/r3u8475667142u24/