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. 2020 Jun 17;10:9771. doi: 10.1038/s41598-020-66311-3

Table 1.

Carbohydrate xenoantigens that have been deleted in genetically-engineered pigs.

Carbohydrate (Abbreviation) Responsible enzyme Gene-knockout pig
1. Galactose-α1,3-galactose (Gal) α1,3-galactosyltransferase GTKO
2. N-glycolylneuraminic acid (Neu5Gc) Cytidine monophosphate-N-acetylneuraminic acid hydroxylase (CMAH) CMAH-KO
3. Sda β-1,4N-acetylgalactosaminyltransferase β4GalNT2-KO