The protective effect of Echinacea spp. (Echinacea angustifolia and Echinacea purpurea) in a rat colitis model induced by acetic acid

Zeynal Dogan, Bilal Ergul, Murat Sarikaya, Levent Filik, Mehmet Alparslan Gonulta?, Sema Hucumenoglu, Murat Can