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A mass-spectrometry analysis of PBS samples after incubation with PHBV/PCL/PVP/Ilo/A prostheses. The spectrum shows peaks corresponding to iloprost (m/z 359,2000) and phosphate salts of the cationic amphiphiles C41H84N4NaO8P2− (m/z 845,3000) and C41H85N4O8P2− (m/z 823,3000).
