Columbia subject headings:
Adenosine--Physiological effect.
Calcium--Antagonists--Testing.
Cardiovascular pharmacology.
Catecholamines--Physiological effect.
Vasodilators--Testing.
Harvard subject headings:
Adenosine--Physiological effect.
Calcium--Antagonists--Testing.
Cardiovascular pharmacology.
Catecholamines--Physiological effect.
Vasodilators--Testing.
Princeton subject headings: