The amount of a mannosyl-oligosaccharide 1,2-alpha-mannosidase IC when measured in blood serum. The trait is level of mannosyl-oligosaccharide 1,2-alpha-mannosidase IC in blood serum (OBA_2042277). Also known as: blood serum mannosyl-oligosaccharide 1,2-alpha-mannosidase IC amount.