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. 2011 Jan 14;12(1):362–375. doi: 10.3390/ijms12010362

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© 2011 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.

This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Cyclic voltammogram of different composite modified SPCEs. (a) bare SPCE; (b) SPCE|MCNTs-Fe₃O₄; (c) SPCE|Fe₃O₄/hemin/MCNTs; (d) SPCE|BSA/anti-AFP/Au NPs/Fe₃O₄/hemin/MCNTs; (e) SPCE|AFP/anti-AFP/Au NPs/Fe₃O₄/hemin/MCNTs in 0.1 mol/L PBS (pH = 6.5) at a scan rate of 100 mV/s.