Reduction of ACh-lnduced Contraction of Rat Isolated Ileum by Coptisine, (+)-Caffeoylmalic Acid, Chelidonium majus, and Corydalis lutea Extracts1 - Boegge, Sabine C; Kesper, Stefanie; Verspohl, Eugen J; Nahrstedt, Adolf (Planta Medica, 1996)