V2EX excyst

Excyst

释义 Definition

excyst(动词):指从囊(cyst)中出来/破囊而出;在寄生虫学与微生物学语境中,常指某些原虫或寄生虫的包囊阶段在适当条件下释放活体(“脱囊”)。在部分语境中也可指使其从囊中释放

发音 Pronunciation

/ksst/

例句 Examples

The parasite can excyst in the intestine.
寄生虫可以在肠道内脱囊而出。

When the cyst reaches a suitable environment, changes in pH and enzymes may trigger it to excyst, releasing the active form that can attach to the gut wall.
当包囊进入合适的环境时,pH 和酶的变化可能会触发其脱囊,释放出能附着在肠壁上的活动形态。

词源 Etymology

来自前缀 **ex-**(“向外、从……出来”)+ cyst(“囊、包囊”),字面意思就是“从囊中出来”。该词多用于生命科学领域,尤其是描述微生物或寄生虫生命周期中的关键步骤。

相关词 Related Words

文学与作品 Literary Works

  • Foundations of Parasitology(经典寄生虫学教材中常用 excyst/excystation 描述“脱囊”过程)
  • Medical Microbiology / Jawetz, Melnick & Adelberg’s Medical Microbiology(医学微生物学教材在讲贾第鞭毛虫等病原体时常出现该词)
  • 学术期刊论文(如 ParasitologyJournal of ParasitologyInfection and Immunity 等)中常用 excyst 描述病原体从包囊释放的实验或机制研究
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