Hi, I'm looking for a reference lab that performs an IHC stain for this antigen. Its used for diagnosing malignant rhabdoid tumor where this antigen is lost. It is expressed in normal tissue. Thanks, Linda A. Sebree University of Wisconsin Hospital & Clinics IHC/ISH Laboratory DB1-223 VAH 600 Highland Ave. Madison, WI 53792 (608)265-6596