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Bacterial Identification by Matrix-Assisted Laser Desorption Ionization Time of Flight Mass Spectrometry


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Mass Spectrum Generated Compared with Library (Database)

Slide 11

February 2012

The mass profile is used as a fingerprint or mass spectrum (as shown here) to compare with those of well-characterized organisms in a database. The spectrum typically includes genus- and species-specific peaks, so that with a comprehensive library of spectra, the genus and often the species of the organism may be determined using bioinformatics.

Mass Spectrum Compared with Library


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