Study on analytical method for alkaloids in Bulbus Fritillariae Cirrhosae Protection of peimisine on hepatic fibrosis of rats induced by CCl4 Studies on the Chemical Constituents of Fresh Bulbs of Fritillaria thunbergii Miq Antiasthmatic mechanism of peimisine in Fritillaria monantha Simultaneous Determination on Three Alkaloids in Bulbs of Fritillaria unibracteata var. wabensis by HPLC-ELSD