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. 2010 Feb 24;48(4):1061–1069. doi: 10.1128/JCM.01953-09

FIG. 1.

FIG. 1.

(a) Comparison of the mass spectra of the five Francisella reference strains in the range from 3,800 to 11,200 Da. Exemplary masses (in daltons) are depicted. a.u., arbitrary units. (b) Three-dimensional PCA plot of the technical replicates of the five Francisella strains. Every dot represents a single technical replicate. The spectra of a particular Francisella reference strain are color coded: F. tularensis subsp. tularensis in red, F. tularensis subsp. holarctica in green, F. tularensis subsp. mediasiatica in blue, F. tularensis subsp. novicida in yellow, and F. philomiragia in pink.