The sample was cooled in ice bath and dried in an Eppendorf Vacufuge before re-constituted in 500 lL of water acidified with 5% formic acid. Mass spectrometric scanning was perform
The sample was cooledin ice bath and dried in an Eppendorf Vacufuge before re-constitutedin 500 lL of water acidified with 5% formic acid. Mass spectrometricscanning was perform