said to be the factor behind the internal exiles and their families' never waning stamina in the face of their arduous, compulsory labor. For similar reasons, it very widely serves as pasture for cattle, reckoned to improve the quality of milk, as well as the yield, and to maintain cattle health at the same time. Most of these claims have yet to be proven in trials, while studies have substantiated the presence of furocoumarins in several of these plants' components. Furanocumarin is known to increase skin sensitivity to sunlight and may cause dermatitis. Research 4,4′-dimethoxychalcone, a chalcone found in Angelica keiskei koidzumi, prolongs the survival of several species such as yeasts, worms, and flies, and decreases senescence in human cell cultures. References External links http://www.pfaf.org/user/Plant.aspx?LatinName=Angelica%20keiskei Angelica Japanese vegetables