Bond Ready-To-Use Primary Antibody Thyroid Transcription Factor-1 (SPT24); 7 mL vial; an in vitro diagnostic reagent for the qualitative identification by light microscopy of human thyroid transcription factor-1 in formalin-fixed, paraffin- embedded tissue by immunohistochemical staining using the automated Bond system; Leica Biosystems Newcastle Ltd., Balliol Business Park West, Benton Lane, Newcastle Upon Tyne NE12 8EW, United Kingdom; Catalog No.: PA0364