RT Journal Article SR Electronic T1 Diagnostic Immunology JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 486 OP 487 DO 10.1136/jcp.46.5.486-d VO 46 IS 5 A1 Anthony J Pinching YR 1993 UL http://jcp.bmj.com/content/46/5/486.4.abstract AB