Surface Plasmon Resonance (SPR) enables real-time detection and monitoring of biomolecular events and provides quantitative information regarding the following -

Specificity – how specific is the binding between two moelcules ?
Concentration – how much of a given molecule is present and active?
Kinetics – what is the rate of association/dissociation?
Affinity – how strong is the binding?
Binding partners - identification of binding targets by linking SPR to MS

For further information, download a 2MB powerpoint file describing Biacore's capabilities, check out the company's web site, or contact Dr. Fadeev !