Volunteers are given tiny traces of a radioactively labelled drug-too small to harm them, and typically just one-hundredth of the estimated full dose-in a drink.

志愿者饮用了微量的放射性元素标记的药物——剂量小到没有伤害，只有足量的百分之一。

youdao

CONCLUSION: a small dose of the combination of resveratrol and 5-fu can have the effect of a large dose of each drug alone in vitro.

结论：在体外联合应用白黎芦醇与5 -氟尿嘧啶，两种药物很小剂量就能达到各自单用但需很大剂量时才能产生的效果。

youdao

Volunteers are given tiny traces of a radioactively labelled drug too small to harm them, and typically just one-hundredth of the estimated full dose in a drink.

ECONOMIST: Monitor