CD74 (LN2)

Anti-CD74 stains predominantly germinal center lymphocytes and B-cell lymphomas but rarely T-cell lymphomas. It stains the cell membrane but a paranuclear globular labeling is also noted. It is a useful addition to the lymphoma phenotyping panel. Anti-CD74 has been shown to be useful in differentiating atypical fibroxanthoma from malignant fibrous histiocytoma, as well as small cell lung carcinomas from non-small cell lung carcinomas.1-8