Determination of four fatty acids in active fraction with anti-prostate hyperplasia of rape bee pollen by HPLC-ELSD Study on quality control of Yupingfeng Dropping Pills Effect of Yupingfeng droppill in treatment of allergic rhinitis Compatibility principle research of Yupingfeng powder based on cocktail probe substrates approaches Investigation on one-pot extraction of active ingredient group from Yupingfeng powder by HPLC Effect of Yupingfeng granule on cytokines of allergic rhinitis induced by OVA in rats Determination of four flavonoids from Yupingfeng prescription in different compatibility proportion by HPLC Determination of four flavonoids from Yupingfeng prescription in different compatibility proportion by HPLC