International Journal of Molecular Sciences Article Bisoprolol, Known to Be a Selective β1-Receptor Antagonist, Differentially but Directly Suppresses IK(M) and IK(erg) in Pituitary Cells and Hippocampal Neurons Edmund Cheung So 1,2,3, Ning-Ping Foo 1,3,4, Shun Yao Ko 3 and Sheng-Nan Wu...