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Rapid Commun Mass Spectrom. 1999;13(15):1586-94.

Extracting and visualizing matrix-assisted laser desorption/ionization time-of-flight mass spectral fingerprints.

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1
Pacific Northwest National Laboratory, Richland, WA 99352, USA.

Abstract

We have developed a method for constructing and extracting matrix-assisted laser desorption/ionization (MALDI) fingerprints. This method is fully automated and statistically based, allowing a large number of spectra to be analyzed at a time in an objective manner. This method can be used to extract the fingerprint of a particular analyte from a spectrum containing multiple analytes. Therefore, this method lends itself well to real-world applications where samples to be analyzed are likely to be impure. We illustrate this method on experimental results from a series of studies of E. coli and B. atrophaeus MALDI time-of-flight mass spectrometry (TOFMS) fingerprints.

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