Stickstoff in Form von Ammoniumchlorid, Schwefel in Form von Natriumsulfid und Cystein, einer einfachen Aminosäure.
However, the MS medium that we used in our study only contained mineral and trace salts, ammonium chloride as a nitrogen source, and cysteine and sodium sulfide as a sulfur source.
https://www.cell.com/trends/biotechnology/fulltext/S0167-7799(24)00177-X
bzw als PDF:
https://www.cell.com/action/showPdf?pii=S0167-7799%2824%2900177-X