Proteins having anti-tumor activity.

摘要

Physiologically active proteins having the following properties: (1) having a molecular weight (determined by gel filtration with Sephadex G-75) of 4,000 to 15,000; (2) obtainable from the water-soluble fraction of protozoan Toxoplasma; (3) showing an anti-tumor activity against sarcoma transplanted on mouse. The above proteins can be purified with a high efficiency by reverse phase liquid chromatography. Further, the purified proteins are useful as anti-tumor agents.