clinical measurement blood immunoglobulin measurement 2013-01-30T12:00:54Z Any measurement related to immunoglobulins, any of several classes of proteins produced by plasma cells and lymphocytes which play essential roles in the immune system, for example, attaching to foreign substances in an effort to destroy them, in blood, the fluid that circulates through the heart, arteries, capillaries and veins carrying nutrients and oxygen to the body tissues and metabolites away from them. CMO:0001531 Clinical_Measurement.ontology JSmith