| 摘要 |
<p>Disclosed are an anti-influenza virus agent, an anti-RS virus agent and an anti-immunodeficiency virus agent, each of which comprises a plant-derived component and has an excellent infection-preventing activity and an excellent proliferation-inhibiting activity against an influenza virus, an RS virus or an immunodeficiency virus, respectively. Each of the anti-influenza virus agent, the anti-RS virus agent and the anti-immunodeficiency virus agent is characterized by comprising an extract of a plant belonging to the family Betulaceae and/or a plant belonging to the family Meliaceae or a dried powder of leaves of the plant(s).</p> |
