| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for obtaining an anti-influenza virus active substance from a natural product or an extract therefrom. <P>SOLUTION: One or more of a raw mushroom (Polyporus umbellatus), its dried mushroom bodies or the dried mushroom powder are extracted with cool water or hot water and the extract has been found to have the anti-influenza virus activation action in the presence of macrophages. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
