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. 2012 Jul 10;7(7):e38995. doi: 10.1371/journal.pone.0038995

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Meng 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) Supernatants obtained by ultra high speed centrifugation of the diluted Hb solution exposed or nonexposed with the MWCNTs. (b) Absorption spectra of the diluted Hb solution exposed or nonexposed with the MWCNTs. (c) ESEM images of the MWCNTs after incubated in the diluted Hb solution, showing strong adsorption of Hb to the MWCNTs.