Interleukin 3 producing cells and process for preparing interleukin 3.

摘要

By employing the agar culture method developed by the present inventors, a human IL-3 producing human leukemia T cell line from mononuclear leukocytes in the peripheral blood of adult T cell leukemia patients. Desired human IL-3 is produced by cultivating this established cell line and is subsequently isolated. This human IL-3 has a mast cell growth activity and is capable of inducing the growth and differentiation of hemopoietic cells including multi-potent stem cells, as well as many other cells.