单词 | nucleolo- |
释义 | nucleolo-comb. form Biology. Forming nouns and adjectives with the sense ‘of or with a nucleolus’. nucleolo-centrosome n. Brit. , U.S. [after German Nucleolo-Centrosoma (J. Keuten 1895, in Zeitschr. f. Wissensch. Zool. 60 219)] now disused an endosome in the nucleus of the protist Euglena, likened to a centrosome in function.ΚΠ 1900 E. B. Wilson Cell (ed. 2) 34 The nucleolus is shown..to be comparable with an attraction sphere or centrosome (nucleolo-centrosome). 1938 Q. Rev. Biol. 13 397/2 Early observations of Euglena revealed a large intranuclear body which divides during mitosis and seems to lead the chromosomes in separating. This body was designated a nucleolo-centrosome; we may for the present call it by the term endosome, which implies an internal body without specifying its nature. nucleolo-cytoplasmic adj. Brit. , U.S. between or involving the nucleolus and the cytoplasm.ΚΠ 1969 Zeitschr. f. Zellforschung u. Mikrosk. Anat. 96 325 (heading) Ultrastructural study on nuclear-cytoplasmic relationships in oocytes of the African lungfish Protopterus aethiopicus. I. Nucleolo-cytoplasmic pathways. 1995 Proc. National Acad. Sci. U.S.A. 92 5919/2 The latter two proteins have been implicated in nucleolo-cytoplasmic transport. nucleologenesis n. Brit. , U.S. the formation of nucleoli.ΚΠ 1975 Nature 7 Aug. 503/2 The rate of nucleologenesis per ribosomal cistron seems to be constant in the different species growing in similar conditions. 1993 Proc. National Acad. Sci. U.S.A. 90 1949/1 Antibody to fibrillarin was used as a marker for nucleologenesis as cells enter G1. ΚΠ 1851 Abstr. Papers Royal Soc. 1843–50 5 563 He [sc. Erasmus Wilson] finds it [sc. the inner surface of the epidermis] to be composed of four kinds of elements..4. Nucleolo-nucleated cells pervading the deep stratum of the epidermis, and of which the longer diameter measures from the 3000th to the 2500th part of an inch. 1870 H. A. Nicholson Man. Zool. I. v. 57 In the second, or sexual method of reproduction, certain of the sponge-particles or ‘sarcoids’ separate themselves and become nucleolo-nucleated, thus coming to resemble ova. nucleolo-nucleolus n. Brit. , U.S. [probably an error for nucleolo-nucleus n.] rare = nucleolo-nucleus n.Apparently only attested in dictionaries or glossaries.ΚΠ 1900 B. D. Jackson Gloss. Bot. Terms 171/1 Nucleolo-Nucleolus, = Endonucleus. ΚΠ 1882 Bot. Gaz. 7 90 Mr. J. M. Macfarlane, Demonstrator of Botany in the University of Edinburg [sic], finds a new factor in the vegetable cell, which he proposes to call the nucleolo-nucleus. It is a well marked body inside the nucleus, round or slightly oval in outline, and exhibits a clear bounding wall differentiating it from the substance of the nucleolus. This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022). < |
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