Lyophilized Mouse Monoclonal Antibody Thyroid Transcription Factor-1; 0.1 mL and 1 mL lyophilized tissue culture supernatant in vials; an in vitro diagnostic reagent for the qualitative identification by light microscopy of thyroid transcription factor-1 molecules in paraffin-embedded tissue by immunohistochemical staining; Leica Biosystems Newcastle Ltd., Balliol Business Park West, Benton Lane, Newcastle Upon Tyne NE12 8EW, United Kingdom; Catalog No.: NCL-TTF-1