“…A number of label-free quantitative studies have successfully applied MS E , including identification of differentially expressed proteins in rat frontal cortex following subchronic treatment with haloperidol or olanzapine, profiling the serum [54] and postmortem brain tissues of schizophrenia patients [53], and analyzing the human pituitary proteome [55]. MS E has also been employed in the studies of the proteins from plants [56,57] and microorganisms [40,48,58,59]. Figure 10 shows the MS E analysis of flavonoids.…”