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Figure 3 | BMC Evolutionary Biology

Figure 3

From: Discrimination of different species from the genus Drosophila by intact protein profiling using matrix-assisted laser desorption ionization mass spectrometry

Figure 3

Scatterplots from unbiased PCAs using 125 spectra from flies of 13 different species. Species-specific color-coding corresponds to that shown in Fig. 2. Spectra belonging to one species are outlined by a convex shape or an ellipse. A: PCA containing all spectra, with 95% concentration ellipses for three subgenera/species groups. B: PCA using only spectra from D. pseudoobscura and D. miranda, with 50% concentration ellipses. C: PCA performed with spectra from the subgenus Drosophila but without D. pseudoobscura and D. miranda, with 95% concentration ellipses. D: PCA of the spectra from the subgenus Sophophora, with 95% concentration ellipses.

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