The beta-blocker blood pressure drugs atenolol (Tenormin), celiprolol, and talinolol.
阻滞剂类高血压药物阿替洛尔（天诺敏），塞利路尔和他林洛尔。
2
The next day, they saw the pictures again but half were given the drug propranolol, a beta-blocker commonly used to treat heart disease.
第二天，再次看这些图片，而仅仅给一半人服用药物，一种普遍用以治疗心脏病的药品。
3
Sir James W Black, is a Scottish pharmacologist who invented beta-blocker and received the Nobel Prize for Medicine in 1988 for his landmark discoveries.