N-Glycosylation modification of proteins is an early marker of the enterocytic differentiation process of HT-29 cells E. Ogier-Denis, C. Bauvy, M. Aubery, P. Codogno, C. Sapin, D. Darmoul, A. Zweibaum and G. Trugnan Reprod. Nutr. Dev., 30 3 (1990) 325-330 DOI: 10.1051/rnd:19900305