Adrenergic alpha-Agonists Male 6 article 6 phentolamine 6 Adrenergic alpha-Antagonists 4 Animals 4 Humans 4 Methoxamine 4 Norepinephrine 4 Rats 4 alpha adrenergic receptor stimulating agent 4 animal experiment 4 controlled study 4 drug effect 4 human 4 human cell 4 male 4 methoxamine 4 nonhuman 4 noradrenalin 4 prazosin 4 priority journal 4 propranolol 4 rat 4 yohimbine 4 7 [3 (4 acetyl 3 hydroxy 2 propylphenoxy) 2 hydroxypropoxy] 4 oxo 8 propyl 4h 1 benzopyran 2 carboxylic acid 2 Adrenergic alpha Agonists 2 Adrenergic beta Agonists 2 Adrenergic beta-Agonists 2 Adrenergic beta-Antagonists 2