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. 2013 Apr 5;8(4):e60190. doi: 10.1371/journal.pone.0060190

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© 2013 Liu et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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(A)Representative images of A.C.NPs- legumain (left) and C.NPs-legumain (right) observed by TEM. Scale bar = 100 nm. (B& C) Size distributions in purified water (pH7.0) and the mean value of zeta-potentials of A.C.NPs-legumain and C.NPs-legumain at 37°C. (D) FTIR spectra of uncoated chitosan particles and alginate acid-coated chitosan particles.