18.4
[1]. I Brockhausen, et al. Mucin synthesis. Conversion of R1-beta 1-3Gal-R2 to R1-beta 1-3(GlcNAc beta 1-)Gal-R2 and of R1-beta 1-3GalNAc-R2 to R1-beta 1-3(GlcNAc beta 1-)GalNAc-R2 by a beta -N-acetylglucosaminyltransferase in pig gastric mucosa. Eur J Biochem. 198 Jun 1;15(3):43-4.