Other

Koken Ltd.

Medical Corporation Ichikawa Clinic

Tomoyuki Tajima

Yoshifusa Kondo

Provided is a method or the like for producing a composition exhibiting cytocidal activity. This method for producing a composition exhibiting cytocidal activity comprises: culturing malignant tumor-derived cells in a culture medium at least until the cell density reaches a level that does not pose a problem for transfer; replacing, after culturing, the culture medium with a physiological buffer salt solution; and recovering the physiological buffer salt solution after death of the malignant tumor-derived cells is observed morphologically in the physiological buffer salt solution.

Method for preparing cell extract component or composition having cytocidal activity

An agent for inhibiting proliferation of human malignant tumor cells is obtained by culturing the human malignant tumor cells in a medium and removing the malignant tumor cells from the cultured medium.

Agent for inhibiting proliferation of human malignant tumor cells

The present invention relates to a process for preparing an inhibiting agent against the proliferation of malignant tumor cells of animals including human beings by cultivating animal malignant tumor cells, removing said malignant tumor cells from the culture medium and successively isolating a fraction having a molecular weight not less than 500 by fractional filtration.

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Ichikawa, Japan

Tomoyuki Tajima