This invention provides methods of retentate chromatography for resolving analytes in a sample. The methods involve adsorbing the analytes to a substrate under a plurality of different selectivity conditions, and detecting the analytes retained on the substrate by desorption spectrometry. The methods...http://www.google.com.au/patents/US6881586?utm_source=gb-gplus-sharePatent US6881586 - Retentate chromatography and protein chip arrays with applications in biology and medicine
