Ontology of Biological Attributes identifier OBA_2042746 (level of platelet-activating factor acetylhydrolase 2, cytoplasmic in blood serum) is the amount of a platelet-activating factor acetylhydrolase 2, cytoplasmic when measured in blood serum. Also known as: blood serum platelet-activating factor acetylhydrolase 2, cytoplasmic amount.