CHARACTERIZATION OF FACTEUR THYMIQUE SERIQUE (FTS) IN THE THYMUS .1. FIXATION OF ANTI-FTS ANTIBODIES ON THYMIC RETICULO-EPITHELIAL CELLS

  • 1 January 1980
    • journal article
    • research article
    • Vol. 42 (3), 470-476
Abstract
Facteur thymique serique (FTS) is a circulating nonapeptide inducing T cell differentiation. Its strict thymus dependency, already shown by its disappearance after thymectomy and its presence in thymus extracts, was confirmed using indirect immunofluorescence or immunoperoxidase by the binding to [murine] reticuloepithelial cells of an antibody produced against synthetic FTS. The specificity of the reaction was demonstrated by the binding inhibition observed after preincubating the anti-FTS antibody with synthetic FTS.