ions of Proteins with Surfaces", Mrksich, M. and Whitesides, G. M., in Poly(ethylene glycol) Chemistry and Biological Applications, J. M. Harris and S. Zalipsky, Eds., American Chemical Society, Washington, DC 1997, 680, 361-373. 554. "Using Surface Plasmon Resonance Spectroscopy to Measure the Acsnriation