This invention provides methods of detecting molecules at an interface, which comprise labeling the molecules with a second harmonic-active moiety and detecting the labeled molecules at the interface using a surface selective technique. The invention also provides methods for detecting a molecule in a medium and for determining the orientation of a molecular species within a planar surface using a second harmonic-active moiety and a surface selective technique.


< Uncoupling of DNA insert propagation and expression of protein for phage display

< Inbred maize line PH183

> Soluble complexes of amylod .beta. peptide and peptidyl prolyl isomerase chaperone and methods of making and using them

> Hybrid molecules and their use for optically detecting changes in cellular microenvironments

~ 00213