Processes for the production of agents for inhibiting the proliferation of malignant tumour cells, and agents produced thereby.

摘要

An inhibiting agent against the proliferation of malignant tumour cells is produced by incubating malignant tumour cells in a culture medium and removing the cells therefrom. The residual culture medium is extracted with n-butanol as solvent. The solid matter is isolated by evaporation to dryness.