A novel lectin,which was named Pinellia pedatisecta lectin A(PPL-A),was purified from the stem tuber of Pinellia pedatisecta Schott by chromatography on Sephadex G-100 and DE-32 cellulose and preparative electrophoresis.

• 首次从中草药掌叶半夏（PtnelliapedatisectaSchott）中通过SephadexG－100分子筛层析、DE－32离子交换层析和制备电泳分离纯化出一种对兔红血球有血凝活性的凝集素，称之为掌叶半夏凝集素A（PinelliapedtaisectalectinA，PPL－A）。