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. Author manuscript; available in PMC: 2010 Aug 3.
Published in final edited form as: Small. 2009 Aug 3;5(15):1784–1790. doi: 10.1002/smll.200900369

Figure 4.

Figure 4

Signal comparison of (a) electrochemical current data and (b) signal-to-background-ratio from amperometric IL-8 protein assays by applying (1) DDPpy sensor, (2) Ppy-only sensor and (3) direct covalent bind without polymer.