Figure 9From: Conditionally activating optical contrast agent with enhanced sensitivity via gold nanoparticle plasmon energy transfer: feasibility study Characterization of resulting uPA-specific NanoPPET. (A) Absorption spectra of 8.0Â nm GNP, GNP-SCOAT, GNP-rSP-mCy, and mCy and (B) Fluorescence emission levels for free mCy, GNP-rSP-mCy complex, and uPA treated complex.Back to article page