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Number of molecular formulas assigned by Electrospray Ionization (ESI) Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FT-ICR MS).
| Sample | ESI(+) | ESI(−) | Total |
|---|---|---|---|
| SurE 10K | 304 | 205 | 489 |
| SurM 10K | 446 | 204 | 619 |
| Biofilm vesicles | 193 | 49 | 219 |
| Planktonic vesicles | 160 | 50 | 192 |
