| 释义 |
excystation, n. Biol. and Med.|eksɪˈsteɪʃən|
[f. ex-1 + cyst n. + -ation, after encystation n.]
= excystment n.
1911Proc. R. Soc. B. LXXXIV. 177 During excystation the outer wall of the cyst, ectocyst,..ruptures and permits the transparent-walled endocyst to come out. 1935Archiv für Protistenkunde LXXXIV. 145 Fresh hay infusion was added to the stock cultures on the fourth day, in order to..determine whether endomixis occurs during the process of excystation. 1960Jrnl. Parasitol. XLVI. 198 It is possible that the conditions in the gut of the host act as a stimulus to the sporozoites within the oocyst to cause them to undergo excystation with little or no aid from the host. 1979Nature 25 Jan. 301/2 When the cyst is ingested by the host, excystation occurs (trophozoites emerge) and the upper small intestine is colonised. 1987Oxf. Textbk. Med. (ed. 2) I. v. 466/2 Their presence results either from contamination of the specimen, or the excystation of cysts that have passed through the gut. |