Electron Transfer Dissociation (ETD) MS
Electron-transfer dissociation (ETD) is a method of fragmenting ions in a mass spectrometer. ETD induces fragmentation of cations (e.g. peptides or proteins) by transferring electrons to them.
Host Cell Proteins (HCPs)
Go beyond the uncertain HCP data provided by ELISA assays to LC/MS methodologies that enable identification and quantification of host cell protein product impurities down to low ppm levels.