Source:http://linkedlifedata.com/resource/umls/id/C0018905
MSH: Sensitive tests to measure certain antigens, antibodies, or viruses, using their ability to agglutinate certain erythrocytes. (From Stedman, 26th ed),CSP: sensitive test to measure certain antigens, antibodies, or viruses, using their ability to agglutinate certain erythrocytes.