Novel oligosaccharide chains on polysialoglycoproteins isolated from rainbow trout eggs. A unique carbohydrate sequence with a sialidase-resistant sialyl group, DGa1NAc beta 1 leads to 4(NeuGc2 leads to 3)DGa1NAc. (1984)

Iwasaki M, Inoue S, Kitajima K, Nomoto H, Inoue Y
Biochemistry, 1984 vol.23:305-310