RT Journal Article SR Electronic T1 Standardisation of synovial tissue infiltrate analysis: how far have we come? how much further do we need to go? JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 93 OP 100 DO 10.1136/ard.2005.036905 VO 65 IS 1 A1 M D Smith A1 D Baeten A1 A-K Ulfgren A1 I B McInnes A1 O Fitzgerald A1 B Bresnihan A1 P P Tak A1 D Veale A1 on behalf of the OMERACT synovial special interests group YR 2006 UL http://ard.bmj.com/content/65/1/93.abstract AB Changes in cellular infiltrate and expression of cytokines, chemokines, and cell adhesion molecules as a result of therapeutic interventions in rheumatoid arthritis can be demonstrated in the synovial membrane. However, before synovial tissue analysis can be used as an outcome measure in such studies, standardisation of the site and method of synovial tissue acquisition, methods of tissue processing, and appropriate methods of detection and measurement of cell lineage specific markers and relevant biological proteins is needed.