A small, slender parasitic nematode worm(Trichinella spiralis) that infests the intestines of various mammals and whose larvae move through the bloodstream, becoming encysted in muscles.

• 旋毛线虫，毛线虫一种小型细长的寄生线虫（旋毛线虫毛线虫属），寄生在各种哺乳动物的肠内，幼虫在血液中运动，定居在肌肉中间