Research ArticleCARDIOVASCULAR
M2 and M4 Receptor Knockout Mice: Muscarinic Receptor Function in Cardiac and Smooth Muscle In Vitro
Peter W. Stengel, Jesus Gomeza, Jurgen Wess and Marlene L. Cohen
Journal of Pharmacology and Experimental Therapeutics March 2000, 292 (3) 877-885;