单词 | protrichocyst |
释义 | > as lemmasprotrichocyst protrichocyst n. Brit. /prə(ʊ)ˈtrɪkə(ʊ)sɪst/ , /prə(ʊ)ˈtrʌɪkə(ʊ)sɪst/ , U.S. /proʊˈtrɪkəˌsɪst/ [after German Protrichocyste (B. M. Klein 1928, in Archiv f. Protistenkunde 62 210), so called as they were thought to be undeveloped trichocysts] Zoology (in various ciliate protozoans) each of the minute sac-like organelles arranged in rows near the surface of the cell which discharge mucoid material; a mucocyst.ΘΚΠ the world > animals > invertebrates > protozoa > class Infusoria > [noun] > member of > parts of > rod-like body in cuticle > undeveloped protrichocyst1933 1933 G. N. Calkins Biol. Protozoa (ed. 2) iv. 135 The trichocysts at rest are capsules filled with a densely staining..substance... They appear to be connected with the silver line system and..are here represented by granules when the trichocysts are undeveloped. In such granular form they are sometimes called ‘protrichocysts’. 1972 M. S. Gardiner Biol. Invertebr. xix. 850/2 Electron micrographs reveal that the stripes contain refringent granules, considered protrichocysts, which are..blue in S[tentor] coeruleus, giving this species its beautiful color. 1985 Trans. Amer. Microsc. Soc. 104 350 Species of the ciliated protozoon genus Pseudourostyla..possess high densities of an elaborate extrusive organelle... These extrusomes were first called protrichocysts. < as lemmas |
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