Absorption kinetics of dehydrocavidine in rats‘ stomachs and intestines Studies on the kinetics of cell growth and nutrient consumption in cell suspension cultures of Corydalis saxicola Study on effect of oligochitosan in promoting intestinal absorption of protoberberine alkaloids in extracts from Corydalis saxicola total alkaloids Separation of dehydrocavidine from Corydalis saxicola by preparative chromatography