Elaiosome Development in Chelidonium majus L. Seeds Characters of life cycle forms of Chelidonium majus populations in different habitats and their correlation to the contents of tannin, flavones and alkaloids in different organs Determination of chelerythrine in Chelidonium majusChelidonium majus by RP-HPLC Determination of chelerythrine in Chelidonium majus by RP-HPLC