PT - JOURNAL ARTICLE AU - Muhammad Babar Aslam AU - Neil Sahasrabudhe TI - Cytokeratin (CK7 and CK20) switching in the natural history of pulmonary small cell carcinoma: an interesting but unpublished phenomenon AID - 10.1136/jcp.2010.083816 DP - 2011 Apr 01 TA - Journal of Clinical Pathology PG - 367--368 VI - 64 IP - 4 4099 - http://jcp.bmj.com/content/64/4/367.short 4100 - http://jcp.bmj.com/content/64/4/367.full SO - J Clin Pathol2011 Apr 01; 64