Finding novel active compounds from plants is still a very important path in the search for new pharmaceutical materials which can be used as lead compounds for developing new drugs. Pollen possesses many physiological activities and plays an important role during plant reproduction [1]. It therefore should contain key substances, including small peptides. In recent years, our group has studied several kinds of pollen and obtained several peptides. The physiological activity studies showed that they had some characteristics promoting immunity and restraining cancer cell division [2-5].
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