Estrogenic Activity of Isolated Compounds and Essential Oils of Pimpinella Species from Turkey, Evaluated using a Recombinant Yeast Screen - Tabanca, Nurhayat; Khan, Shabana I; Bedir, Erdal; Annavarapu, Srinivas; Willett, Kristine; Khan, Ikhlas A; Kirimer, Nese; Baser, K Husnu Can (Planta Medica, 2004)