Liquid Mouse Monoclonal Antibody Thyroid Transcription Factor-1; 1 mL liquid tissue culture supernatant in a 1 mL vial; 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-L-TTF-1