Ontology of Biological Attributes id OBA_2043671 (level of lactosylceramide alpha-2,3-sialyltransferase in blood serum) is the amount of a lactosylceramide alpha-2,3-sialyltransferase when measured in blood serum. Also known as: blood serum lactosylceramide alpha-2,3-sialyltransferase amount.