Litigation about Agent Orange, a defoliant and herbicide used by American forces in the Vietnam war, has provided the most extensive judicial discussion of toxic causation.

• 关于药剂橙（一种美国部队在越南战争中使用的落叶剂和除劳剂）的立法，已经提供了最广泛的有毒物质因果关系的司法讨论。