喂以饲料的日本猴四肢畸形的多发疑与农药有关。在动物实验上确实有些农药显示出有致畸作用或致胎仔死亡作用。但是,对胎仔的损害作用多在给母体投与能够引起损害的剂量时才出现。最近流行病学调查结果提示农药的使用也与人的畸形发生有关。除草剂2,4,5-T在越南战争中曾被用为落叶剂,因而怀疑可能是引起畸形和流产的原 Feed the Japanese monkey limb deformities suspected of more than pesticides. In animal experiments, some pesticides do show teratogenic effects or fetal death. However, the damaging effects on the litter occur only when the dose administered to the mother can cause damage. Recent epidemiological findings suggest that the use of pesticides is also associated with human deformity. Herbicide 2,4,5-T was used as a defoliant in the Vietnam War, so it is suspected that it may be the cause of deformity and abortion