The median lethal doses(LD_(50)) of single Knoxia valerianoides Thorel. et Pitard,Daphne genkwa Sieb. et Zucc,Glycyrrhiza uralensis Fisch and their various proportions were determined with the method of peritoneal injection in healthy mice.

• 以健康小鼠腹腔注射法测定单味大戟、芫花与甘草及其不同比例的半数致死量(LD_(50))。