Formalin-fixed and paraffin-embedded human tonsil tissue (4 um) stained with PTPRC monoclonal antibody, clone E19-G (Cat # MAB1649) shows strong positive immunostaining. Kindly performed and provided by Katarina Poliakova, MD and Lubomir Straka, MD, Ph. D.from Clinical Pathology Presov, Ltd., Presov, Slovakia.