Ultimate 3000 ultra-high performance liguid chromatography (UHPLC) (Dionex, Sunnyvale, CA, USA), in conjunction with high-pH reversed-phase chromatography, was used to separate and fractionate tryptic peptides
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Push the pin through the rubber stopper at a slight angle, so that you inject the DMSO toward the inside wall of the vial, not directly onto the powder
European Journal of Clinical Pharmacology., 1996