Abstract: A food material capable of suppressing the genesis of breast cancer or proliferation of terminal breast cancer. An extract of Agaricus Blazei Murill comprising an ingredient capable of suppressing the genesis of breast cancer or proliferation of terminal breast cancer is provided. This ingredient can be a chromatographic main elution fraction of 100 to 2000 molecular weight obtained through the steps of extracting the fruit body of Agaricus Blazei Murill with hot water, dialyzing the obtained extract and subjecting the obtained dialysis external fluid to chromatography. Alternatively, the above ingredient can be a dialysis external fluid obtained through the steps of extracting the fruit body of Agaricus Blazei Murill with hot water, adding ethanol to the obtained extract to thereby obtain precipitates, and dissolving the precipitates in water and dialyzing the resultant solution.

Abstract: A foodstuff capable of preventing the induction or metastasis of cancer is provided. In particular, an Agaricus blazei Murill extract comprising an ingredient capable of preventing the induction or metastasis of cancer is provided. The ingredient can be a chromatographic main elute fraction of 100 to 2000 molecular weight, obtained by the steps of extracting the fruit body of Agaricus blazei Murill with hot water, dialyzing the resultant extract, and subjecting the thus obtained dialysis external fluid to chromatography. Alternatively, the ingredient can be a dialysis external fluid obtained by the steps of extracting the fruit body of Agaricus blazeiMurill with hot water, adding ethanol to the resultant extract to thereby obtain precipitates, dissolving the precipitates in water, and dialyzing the solution.

Abstract: A foodstuff capable of preventing the induction or metastasis of cancer is provided. In particular, an Agaricus blazei Murill extract comprising an ingredient capable of preventing the induction or metastasis of cancer is provided. The ingredient can be a chromatographic main elute fraction of 100 to 2000 molecular weight, obtained by the steps of extracting the fruit body of Agaricus blazei Murill with hot water, dialyzing the resultant extract, and subjecting the thus obtained dialysis external fluid to chromatography. Alternatively, the ingredient can be a dialysis external fluid obtained by the steps of extracting the fruit body of Agaricus blazeiMurill with hot water, adding ethanol to the resultant extract to thereby obtain precipitates, dissolving the precipitates in water, and dialyzing the solution.