单词 | nematoblast |
释义 | > as lemmasnematoblast nematoblast n. Brit. /ˈnɛmətə(ʊ)blɑːst/ , /ˈnɛmətə(ʊ)blast/ , /ˈniːmətə(ʊ)blɑːst/ , /ˈniːmətə(ʊ)blast/ , /nᵻˈmatə(ʊ)blɑːst/ , /nᵻˈmatə(ʊ)blast/ , U.S. /ˈnɛmədəˌblæst/ , /ˈnimədəˌblæst/ , /nəˈmædəˌblæst/ [in sense (a) after Italian nematoblasto (E. Sertoli 1878, in Archivio per le scienze med. (Torino) 2 125)] †(a) a spermatocyte; (b) a cell that is a precursor of a nematocyte (cf. cnidoblast n. at cnida n.).ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > embryo parts > [noun] > embryo tissue blastema1849 nematoblast1885 neuroepithelium1889 scleroblastema1934 1885 Q. Jrnl. Microsc. Sci. 25 363 ‘Nematoblasts’..are small cells produced by the division of the preceding generation of seminiferous cells, and destined to develop into spermatozoa. 1944 Q. Rev. Biol. 19 232/2 The mechanism of polar capsule formation offered many analogies with that which has been observed by Bedot in the nematoblasts of certain coelenterates. 1965 V. Kiortsis & H. A. L. Trampusch Regeneration in Animals p. xxiv Tardent shows that differentiated cells (nematoblasts) can continue to divide in vitro and so presumably also in vivo. 1998 Development 125 1637 In adult polyps, prdl-b is a marker for synchronously dividing nematoblasts. < as lemmas |
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