title: On physical forces governing cardiac glycoside activity.
mesh_terms: D000818:Animals; D002301:Cardiac Glycosides / Q000494:pharmacology; D004074:Digitoxin / Q000031:analogs & derivatives / Q000494:pharmacology; D006321:Heart / Q000187:drug effects*; D008968:Molecular Conformation; D013329:Structure-Activity Relationship; D014961:X-Ray Diffraction
chemical_list: D002301:Cardiac Glycosides; D004074:Digitoxin