1. The cotton treen often is a host to ERGOT, a parasitic fungus whose derivatives have long been used in childbirth under medical supervision to strengthen uterine contractions.
   棉树常常是一种寄生虫真菌麦角的寄主，麦角的衍生物长久以来一直在医生指导下用于加强子宫收缩。

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