William D van Dongen

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Various components of the beta-casein fraction from bovine milk were separated by preparative reversed-phase high-performance liquid chromatography (RP-HPLC). They included the genetic variants beta(More)
The potential of the direct coupling of solid-phase extraction (SPE) with mass spectrometry (MS) for the analysis of biological samples is demonstrated. For SPE a cartridge exchanger is used and the(More)
Unknown, specific mutations in the sequence of an enzyme variant (a Bacillus subtilisin protease) produced by protein engineering were identified using High-performance Liquid Chromatographic/Fast(More)