英语语法分析

Decoction of Scapus Eriocauli had no sensitization to the skin of guinea pigs.

谷精草制剂对豚鼠的皮肤无致敏性。

Conclusion: Decoction of Scapus Eriocauli has no irritation and sensitization to skin. It shows good safety in external use.

结论：谷精草中药煎剂对皮肤无刺激性和无致敏性，外用安全可靠。