Highly sensitive periodic acid/Schiff detection of bovine milk glycoproteins electrotransferred after nondenaturing electrophoresis, urea electrophoresis, and isoelectric focusing Antonio Silvio Egito, Jean-Michel Girardet, Laurent Miclo and Jean-Luc GaillardLait, 81 6 (2001) 775-785DOI: https://doi.org/10.1051/lait:2001104