RT Journal Article SR Electronic T1 RNA interference screening demystified JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 195 OP 200 DO 10.1136/jcp.2008.058735 VO 62 IS 3 A1 C J Lord A1 S A Martin A1 A Ashworth YR 2009 UL http://jcp.bmj.com/content/62/3/195.abstract AB Genetic screens, where the effects of modifying gene function on cell behaviour are assessed in a systematic fashion, have for some time provided useful information to those interested in disease pathogenesis and treatment. Genetic screens exploiting the phenomenon of RNA interference (RNAi) are now becoming commonplace. This article explains the different RNAi screen formats and describes some of the applications of RNAi screening that may be pertinent to the research pathologist.