1. Furukawa K, Sato T (1999) beta-1,4-Galactosylation of N-glycans is a complex process. Biochim Biophys Acta 1473:54–66
2. Ichikawa Y, Yamada C, Horiki T, Hoshina Y, Uchiyama M, Yamada Y, Toumatu J (1998) Anti-agalactosyl IgG antibodies and isotype profiles of rheumatoid factors in Sjögren’s syndrome and rheumatoid arthritis. Clin Exp Rheumatol 116:709–715
3. Kondo A, Kiso M, Hasegawa A, Kato I (1994) Separation of pyridylamino oligosaccharides by high-performance liquid chromatography on an amine-bearing silica column. Anal Biochem 219:21–25
4. Matsumoto A, Shikata K, Takeuchi F, Kojima N, Mizuochi T (2000) Autoantibody activity of IgG rheumatoid factor increases with decreasing levels of galactosylation and sialylation. J Biochem 128:621–628
5. Parekh RB, Dwek RA, Sutton DJ, Fernandes DL, Leung A, Stanworth D, Rademacher TW, Mizuochi T, Taniguchi T, Matsuta K, Takeuchi F, Nagano Y, Miyamoto T, Kobata A (1985) Association of rheumatoid arthritis and primary osteoarthritis with changes in the glycosylation pattern of total serum IgG. Nature 316:452–457