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. Author manuscript; available in PMC: 2026 Apr 1.
Published in final edited form as: Int J Mass Spectrom. 2025 Feb 15;510:117421. doi: 10.1016/j.ijms.2025.117421

Figure 2.

Figure 2.

PS-IM-MS and PS-MS/MS spectra obtained in the negative ion mode of the 5 Bacillus species where (A) Ion mobility spectra revealed the presence of various lipid isomers of m/z 721.51 (PG (32:0)) and (B) Tandem mass spectra (MS/MS) spectra of m/z 721.51 which support the identification of the lipid isomers by the IM spectra. Reprinted with permission from International Journal of Mass Spectrometry, 478, Species-level discrimination of microorganisms by high-resolution paper spray–Ion mobility–Mass spectrometry, 116871, Copyright 2022, Elsevier.