Comparative effects of different extracts of Kansui Radix stir-baked with vinegar on function of expelling water retention with drastic purgative in cancerous ascites model rats Filtration of active fractions with function of expelling water retention with drastic purgative from Kansui Radix stir-baked with vinegar Comparative study on expelling water retention with drastic purgative of crude and vinegar stir-baked Kansui Radix in cancerous ascites rats