title: 'A riddle wrapped in a mystery inside an enigma'.
authors.forename: G L
authors.initials: GL
authors.lastname: Stiles
mesh_terms: D000317:Adrenergic alpha-Antagonists / Q000494:pharmacology*; D006333:Heart Failure / Q000503:physiopathology*; D006801:Humans; D009200:Myocardial Contraction / Q000502:physiology; D009638:Norepinephrine / Q000378:metabolism*; D010646:Phentolamine / Q000494:pharmacology*; D017729:Presynaptic Terminals / Q000187:drug effects / Q000502:physiology*; D011942:Receptors, Adrenergic, alpha / Q000187:drug effects / Q000502:physiology*; D009435:Synaptic Transmission / Q000502:physiology; D016277:Ventricular Function, Left / Q000502:physiology*
chemical_list: D000317:Adrenergic alpha-Antagonists; D011942:Receptors, Adrenergic, alpha; D009638:Norepinephrine; D010646:Phentolamine