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. 2012 Nov 1;5:612. doi: 10.1186/1756-0500-5-612

Figure 1.

Figure 1

Workflow overview. Eight plasma samples from healthy volunteers were collected into a pool to obtain four technical replicates. After cut-off, each replicate was processed by SPE on a robotic device containing three different resins: anionic, cationic and liphophilic. The 24 obtained samples were further fractioned by nanoHPLC-MALDI-TOF-TOF analysis.