OBA_2042973 (level of protein O-linked-mannose beta-1,2-N-acetylglucosaminyltransferase 1 in blood serum) is the amount of a protein O-linked-mannose beta-1,2-N-acetylglucosaminyltransferase 1 when measured in blood serum. Also known as: blood serum protein O-linked-mannose beta-1,2-N-acetylglucosaminyltransferase 1 amount.