Offline and online liquid chromatography mass spectrometry in quantitative proteomics.

Hyphenation with liquid chromatography has become indispensable in mass spectrometry-based proteomics. Sample complexity together with the large variations in dynamic range can be only tackled using techniques that isolate and/or concentrate individual components prior to mass spectrometric analysis. In this review the most recent developments in micro/nanoliquid chromatography interfaced with MALDI and electrospray ionisation are discussed. Particular attention is focused on all applications related to quantitative proteomics.