Ontology of Biological Attributes term OBA_2050931 (level of alpha-N-acetylneuraminide alpha-2,8-sialyltransferase in blood) is the amount of a alpha-N-acetylneuraminide alpha-2,8-sialyltransferase when measured in blood. Also known as: blood alpha-N-acetylneuraminide alpha-2,8-sialyltransferase amount.