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单词 excyst
释义

excystv.

/ɛkˈsɪst/
Etymology: Back-formation < excystation n.
Biology and Medicine.
intransitive. To undergo excystment; to emerge or be released from a cyst.
ΘΚΠ
the world > life > biology > physical aspects or shapes > indentation or cavity > [verb (intransitive)] > emerge from enclosure
excyst1913
1913 Proc. Royal Soc. 1912–13 B. 86 434 Traces of the iodine in potassium iodide solution..gave exactly the same tone of blue as in the areas where Colpoda had excysted.
1933 Physiol. Zoöl. 6 127 This ciliate does not excyst from its permanent cysts spontaneously, but must be stimulated to excyst by some very definite change in the environment.
1965 Jrnl. Protozool. 12 416/2 The predator..excysts readily in the presence of bacteria upon which it is unable to feed.
1975 Jrnl. Parasitol. 61 657 Upon ingestion by the vertebrate host, metacercariae excyst and migrate into the lungs where they mature.

Derivatives

exˈcysted adj. that has excysted.
ΘΚΠ
the world > life > biology > physical aspects or shapes > indentation or cavity > [adjective] > depression or cavity > emerging or emerged from enclosure
excysted1911
excysting1913
1911 Proc. Royal Soc. B. 84 178 Recently excysted Col[poda] cucullus are easily recognisable by their clear protoplasm, their readily distinguishable nuclear area, and by their absence of food vacuoles.
1935 Archiv f. Protistenkunde 84 148 Excysted didinia, like the exconjugants, also die, unless fed.
1977 Jrnl. Protozool. 24 23/1 A small excysted cell grows rapidly and new somatic and oral kinetosomes proliferate within the functioning oral apparatus at the apical region of the body.
exˈcysting adj.
ΘΚΠ
the world > life > biology > physical aspects or shapes > indentation or cavity > [adjective] > depression or cavity > emerging or emerged from enclosure
excysted1911
excysting1913
1913 Proc. Royal Soc. 1912–13 B. 86 433 The antiseptics, toluene, chloroform, etc., kill the excysting organisms but not the enzyme which it is secreting.
This entry has not yet been fully updated (first published 1993; most recently modified version published online September 2018).
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