Kevin Jooß et.al.: Heart-cut nano-LC-CZE-MS for the characterization of proteins on the intact level. In: Electrophoresis, 40 (2019), pp. 1061-1065. DOI: https://doi.org/10.1002/elps.201800411 Keywords: Chromatography, Reverse-Phase/instrumentation/methods; Electrophoresis, Capillary/instrumentation/methods; Glycosylation; Hydrogen-Ion Concentration; Limit of Detection; Ribonucleases/analysis; Tandem Mass Spectrometry/instrumentation/methods.