[Immunochemical characterization of molecules identified in human thymic epithelium by anti-thymulin monoclonal antibodies].

Four high molecular weight molecules (ranging from 59 to 48 kd) were evidenced in the human thymic epithelium, after one and two dimensional immunoblot analyses, using monoclonal antibodies directed against synthetic thymulin. One of these immunoreactive proteins might correspond to the intra-thymic precursor of the hormone.