level of phosphoprotein associated with glycosphingolipid-enriched microdomains 1 in blood serum (OBA_2044993, an Ontology of Biological Attributes id) is the amount of a phosphoprotein associated with glycosphingolipid-enriched microdomains 1 when measured in blood serum. Also known as: blood serum phosphoprotein associated with glycosphingolipid-enriched microdomains 1 amount.