为了验证头部畸形是否由于早期软骨发育异常造成，对畸形个体的头部进行了切片观察。

To further confirm whether the herbicides had an impact on the development of cartilage, the heads of the abnormal individuals were observed by histological examination.

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结果发现畸形个体头部的软骨发育轮廓与对照组具有明显差异，且异常导致脑室变小。

The results showed that development of cartilage of head showed significant difference, and resulted in smaller ventricles, compared with the control group.

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结果发现畸形个体头部的软骨发育轮廓与对照组具有明显差异，且异常导致脑室变小。

The results showed that development of cartilage of head showed significant difference, and resulted in smaller ventricles, compared with the control group.

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