Title: Normal human serum contains high levels of anti-Gal alpha 1-4GlcNAc antibodies.
Journal: Xenotransplantation 20071101
Title: Presence of natural anti-Galalpha1-4GalNAcbeta1-3Gal (anti-NOR) antibodies in animal sera.
Journal: Glycoconjugate journal 20061101