OBA_2042275 (level of mannosyl-oligosaccharide 1,2-alpha-mannosidase IB in blood serum) is the amount of a mannosyl-oligosaccharide 1,2-alpha-mannosidase IB when measured in blood serum. Also known as: blood serum mannosyl-oligosaccharide 1,2-alpha-mannosidase IB amount.