Intact non-covalent biological complexes resulting from interactions in solutions have been observed by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI TOF-MS). However, their analysis is hampered by the presence of non-specific, non-covalent complexes (clusters) produced under MALDI conditions. A study of the influence of laser energy and ion extractio...... hiện toàn bộ