Studies have demonstrated that plant extracts possess various biological characteristics, including immunomodulatory activity. Heracleum persicum Desf. (Apiaceae), a medicinal plant native to Iran, was studied for its immunomodulatory activity. Immunomodulatory activity of different doses of an aqueous extract of H. persicum, was evaluated in female Swiss albino mice. Mice were treated with thr...

We tested two biological properties of a continuously growing mouse cytotoxic T cell line, L4, which is specific for influenza A virus and has been cloned and recloned many times. We previously reported that L4 cells are H-2 restricted and cross-reactive for all type A influenza viruses, whereas they do not recognize type B influenza viruses. They bear Thy-1 and Lyt-2 markers. In the present st...