Quercetin-Induced Induction of the NO/cGMP Pathway Depends on Ca2+-Activated K+ Channel-Induced Hyperpolarization-Mediated Ca2+-Entry into Cultured Human Endothelial Cells - Kuhlmann, Christoph R W; Schaefer, Christian A; Kosok, Christoph; Abdallah, Yaser; Walther, Sabine; Lüdders, Dörte W; Neumann, Thomas; Tillmanns, Harald; Schäfer, Claudia; Piper, Hans M; Erdogan, Ali (Planta Medica, 2005)