Y. pestis should be added to the list of bioterrorism CP-868596 manufacturer agents such as Bacillus anthracis that are readily identifiable by MALDI-TOF-MS [36, 37]. Acknowledgements The authors acknowledge Mr. Philippe Hoest for his help in handling Y. pestis isolates in the BSL3 laboratory. Electronic supplementary material Additional file 1: List of m/z values of MALDI-TOF peaks characteristic

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