Additional file 1.

Supporting information. A document showing two supplementary figures: the TEM image of BSA-Au nanocomplexes in long aging time and the FT-IR spectra of (a) BSA and (b) BSA-Au nanocomplexes.

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Lin et al. Nanoscale Research Letters 2013 8:170   doi:10.1186/1556-276X-8-170