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Sample stability at room temperature. Protein profiles of saliva samples of seven volunteers (A–G) taken at 0 and 4 hrs of incubation at room temperature are shown for the mass range of 1000 to 10000 Da. Protein profiles were generated using CM10 proteinchips and 100 mM NH4Ac pH 4.0 as binding and washing buffer. CHCA was used as matrix.
