RT Journal Article SR Electronic T1 The Lymphoid System. Methods of Clinical Investigation JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 505 OP 506 DO 10.1136/jcp.31.5.505-e VO 31 IS 5 A1 J. G. Hall YR 1978 UL http://jcp.bmj.com/content/31/5/505.5.abstract AB