V2EX excystation

Excystation

释义 Definition

(生物/寄生虫学)脱囊(过程):指某些原生生物或寄生虫从包囊(cyst)状态中“出来”,囊壁破裂或打开,释放出可活动、可感染或可繁殖的阶段(如滋养体)。

发音 Pronunciation

IPA:/k.sste.n/

例句 Examples

Excystation occurs when the parasite leaves the cyst in the intestine.
脱囊发生在寄生虫在肠道中离开包囊的时候。

Researchers studied excystation by changing pH and bile levels to mimic conditions in the human gut, revealing triggers for infection.
研究人员通过改变酸碱度和胆汁水平来模拟人体肠道环境,从而研究脱囊过程,并找到了引发感染的触发因素。

词源 Etymology

excystation 由 **ex-**(“向外、出”)+ cyst(“囊、包囊”)+ -ation(表示“过程/行为”)构成,字面意思就是“从囊中出来的过程”。它常与 encystation(形成包囊)成对出现,用来描述一些微生物在环境与宿主之间转换生存形态的关键步骤。

相关词 Related Words

文学与作品 Literary Works

  • Foundations of Parasitology(Roberts & Janovy):在原生动物与蠕虫寄生虫章节中常用 excystation 描述从包囊到活跃期的转变。
  • Medical Parasitology(如 Markell and Voge’s Medical Parasitology 等教材版本):讨论贾第虫(Giardia)等肠道寄生虫生命周期时会出现该词。
  • 学术期刊 ParasitologyJournal of ParasitologyTrends in Parasitology:在研究包囊在胃肠道条件下被激活、释放感染阶段的论文中常见该术语。
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