| 释义 |
▪ I. telo-1|ˈtɛləʊ, ˈtiːləʊ|
combining form repr. Gr. τέλος, τέλε-ος end, occurring in a few scientific (biological, etc.) terms: see also teleo-2. ˈteloblast [Gr. βλαστός germ], each of a number of proliferating cells at one end of the embryo in segmented animals, as insects and annelids; teloˈdendrion, -ˈdendron (pl. -dendria is used for both forms) Anat. [Gr. δενδρίον, dim. of δένδρον tree], one of the terminal branches into which the axon of a nerve cell divides; telolecithal |-ˈlɛsɪθəl| a. [Gr. λέκιθος yolk], applied to an ovum having food-yolk collected at or near one end (opp. to alecithal and centrolecithal); ˈtelomere Cytology [-mere], the compound structure found at the end of a chromosome in eukaryotes, having only one spindle pole; teloˈmitic a. Cytology [Gr. µίτ-ος thread] = telocentric a.; teloˈpeptide Biochem., a peptide which is at or near the end of a polypeptide molecule; ˈtelopore [pore n.1], an opening at one end of an embryo, formed by invagination of the teloblasts; teloˈstomiate a. [f. Gr. στόµι-ον dim. of στόµα mouth], having the mouth at one end of the main axis of the body; telosyˈnapsis Cytology, a supposed end-to-end pairing of chromosomes during the zygotene stage of meiosis; = telosyndesis below; hence telosyˈnaptic a., telosyˈnaptically adv.; † telosynˈdesis Cytology = telosynapsis above.
1890Patten in Q. Jrnl. Microsc. Sc. Aug. 369 Three longitudinal sections, showing successive stages in the formation of a telopore by the invagination of *teloblasts.
1899L. F. Barker Nervous System viii. 82 The ultimate terminals (*telodendrions) of the axones have been carefully and exactly studied. 1907I. Hardesty in Morris & McMurrich Morris's Treat. Human Anat. (ed. 4) 751 The axone bearing the impulse on approaching its termination loses its sheath and breaks up into its numerous terminal twigs, the final of which are called telodendria. 1949New Gould Med. Dict. 1030/2 Telodendrion. See telodendron. 1966C. R. & T. S. Leeson Histology x. 178/2 In some cases, the telodendria are so numerous as to surround the neuron on which they terminate in a basket⁓like arrangement.
1880Balfour Comp. Embryol. I. iii. 90 The ova in which the yolk is especially concentrated at one pole I should propose to call *telolecithal. 1888E. R. Lankester in Nature 29 Mar. 507/1 The classification of animal eggs proposed by Balfour is adopted, viz. alecithal, telolecithal, and centrolecithal.
1940H. J. Muller in Jrnl. Genetics XL. 2 The reconstructed chromosome cannot continue to be transported..unless it happens to be monocentric and—in Drosophila at least—ditelic, one centromere and two *telomeres being necessary and permanent organelles. 1960L. Picken Organization of Cells vii. 261 Within the nucleus the chromosomes present their telomeres—‘centromeres’ connected to the chromosomes by terminal filaments—to the aspect of the nuclear membrane nearest to the spindle. 1983Nature 13 Jan. 112/1 Telomeres are very stable as free ends, whereas ends of [DNA] molecules broken in vivo tend to stick together irreversibly.
1917E. E. Carothers in Jrnl. Morphology xxviii. 449 The unusual conditions of the chromosomes in this group have made advisable the introduction of..new terms... *Telomitic—a term used to indicate terminal fiber attachment. 1934L. W. Sharp Introd. Cytol. (ed. 3) ix. 116 Supposedly telomitic chromosomes have been shown in some instances to have their attachment region slightly back from the end.
1964F. O. Schmitt et al. in Proc. Nat. Acad. Sci. LI. 494 The term ‘end-chains’ with its terminal connotation has been replaced by the term ‘*telopeptides’. 1971Nature 22 Jan. 242/1 Every third residue in the chain is glycine, except in short ‘non-collagenous’ telopeptides at the N-terminal ends of the chains. 1975Ibid. 10 July 125/1 Rabbit anti-collagen serum is primarily directed to terminal (telopeptide) antigenic sites, and not to helical or central sites.
1890Patten in Q. Jrnl. Microsc. Sc. Aug. 369 A forward continuation of the anterior wall of the terminal pore or *telopore.
1877E. R. Lankester in Q. Jrnl. Microsc. Sc. Oct. 422 Radial and bilateral symmetry and *telostomiate and prostomiate conditions. Ibid. 423 A specialisation of the ciliated ectoderm at a time when the organism was telostomiate.
1909*Telosynapsis [see parasynapsis s.v. para-1 1]. 1920W. E. Agar Cytology ii. 43 Parasyndesis and Telosyndesis. [Note] Called parasynapsis and telosynapsis by cytologists, who employ the term synapsis in the sense in which syndesis is here used. 1945M. J. D. White Animal Cytol. & Evolution v. 79 The old controversy between adherants of the theory of telosynapsis and those who believed in the alternative viewpoint..is only of historical interest, since ‘parasynapsis’..is now known to be universal.
1912Jrnl. Exper. Zool. XIII. 394 Attention may be called to the increasing tendency..to reject, or at least restrict, the theory of parasynapsis.., in favor of a *telosynaptic conception. 1929Jrnl. Genetics XXI. 47 Digby's interpretation, so much quoted in support of the telosynaptic view.., is due to a misunderstanding of the essential features of meiosis.
1910*Telosynaptically [see parasynaptically adv. s.v. para-1]. 1926Genetics XI. 274 The third element is joined telosynaptically to the other two chromosomes.
1920L. Doncaster Introd. Study Cytol. v. 68 The end-to-end union [of chromosomes] (formerly supposed to be frequent or universal) is *telosyndesis (or telosynapsis).
▪ II. telo-2
repr. Gr. τηλο-, combining form of τῆλε or τηλοῦ far off, occurring exceptionally instead of τηλε- (tele-), as in τηλοπέτης far-flying. Rarely used in Eng. compounds, as in telodynamic, telometer (see telemeter n.), telotype. |