 Characteristics of TF It has been shown that transmission fo T-Lymphocyte reactivity is transmissible not only by T-cells alone, but also by hommogenate of peripheral white blood cells. Later it became clear that for the transmission of cellular immunity is responsible dialysable fraction of T-lymphocytes homogenate with small molecular weight of 10 kDa; consists of amino acids, small peptides, nucleotides etc. This homogenate was named Transfer - factor TF. One dose of lyophilized drug contains: Leucocyti dialysatum 200 x 10 6 contains various IFNs, ILs, chemokines, endorfins, heat shock protein etc 