Results 241 to 250 of about 402,652 (266)
THE MITOTIC SPINDLE APPARATUS OFNEUROSPORA CRASSA
Canadian Journal of Genetics and Cytology, 1971 Electron microscopic studies of the sl-327 mutant of Neurospora crassa reveal that somatic nuclear division in hyphlet somatic cells involves a definite spindle apparatus consisting of spindle microtubules terminating at specific loci on the external surface of the nuclear envelope. These loci, termed spindle plaques, have been observed in a variety of
W. Barry Van Winkle +2 more
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A gene required for the separation of chromosomes on the spindle apparatus in yeast
Cell, 1986We describe the phenotypes caused by a cold-sensitive lethal mutation (ndc1-1) that defines the NDC1 gene of yeast. Incubation of ndc1-1 at a nonpermissive temperature causes failure of chromosome separation in mitosis but does not block the cell cycle.
J H, Thomas, D, Botstein
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Reactivation of isolated mitotic apparatus: Metaphase versus anaphase spindles
Cell Motility, 1991AbstractMitotic spindles isolated from sea urchin eggs can be reactivated to undergo mitotic processes in vitro. Spindles incubated in reactivation media containing sea urchin tubulin and nucleotides undergo pole‐pole elongation similar to that observed in living cells during anaphase‐B.
R E, Palazzo, D A, Lutz, L I, Rebhun
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Arrangement of spindle apparatus in mitoses of different ploidy
Experimental Cell Research, 1975Abstract In non-hypotonically treated mitoses from tissue cultures of Microtus agrestis , both the constitutive heterochromatin of the sex chromosomes and the spindle apparatus were stained by the Giemsa C-banding technique. By means of counting the heterochromatic chromosomes, we determined the cell ploidy and studied the number of centrioles and ...
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Spindle Birefringence of Isolated Mitotic Apparatus Analysed by Pressure Treatment
Journal of Cell Science, 1976ABSTRACT Sea-urchin zygote mitotic apparatus (MA) isolated in a glycerol/dimethylsulphoxide medium were treated with pressure. Pressure treatment had no effect on spindle birefringence when MA were in full-strength isolation medium. After placing MA in quarter-strength isolation medium, pressures of 4·0 × 103– 1·8 × 104 Ibf in.−2 (2·76 ×
A, Forer, A M, Zimmerman
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Simultaneous Staining of the Spindle Apparatus and Constitutive Heterochromatin
Stain Technology, 1974In nonhypotonically treated mitoses from tissue cultures grown on cover glasses, the constitutive heterochromatin as well as the spindle apparatus can be stained by a Giemsa technique for demonstrating repetitive DNA. Cells were treated with 0.015 M sodium chloride and 0.0015 M sodium citrate at 92 C for about 3 min, then with 03 M sodium chloride and ...
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Evaluation of the spindle apparatus of in-vitro matured human oocytes following cryopreservation
Human Reproduction, 1995The present study was conducted to determine if the cryopreservation of immature human oocytes has a deleterious effect on the meiotic spindle following maturation in vitro. Oocytes were obtained in excess from in-vitro fertilization patients and divided into four groups.
S G, Baka +5 more
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Biosystems, 1975
Ultrastructural variations of micronuclear mitosis in three species of Paramecium have been reviewed for the purpose of hypothesizing possible evolutionary relationships. P. bursaria is considered to be the most primitive species because it has complex kinetochore-equivalents termed microlamellae which attach to microfilaments. P.
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Ultrastructural variations of micronuclear mitosis in three species of Paramecium have been reviewed for the purpose of hypothesizing possible evolutionary relationships. P. bursaria is considered to be the most primitive species because it has complex kinetochore-equivalents termed microlamellae which attach to microfilaments. P.
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Protoplasma, 1974
Microtubules (MTs) are the most prominent structural elements of the spindle apparatus. Consequently they are generally thought to a play a role in the processes of spindle elongation and the autonomous chromosome movements towards the spindle poles in anaphase.
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Microtubules (MTs) are the most prominent structural elements of the spindle apparatus. Consequently they are generally thought to a play a role in the processes of spindle elongation and the autonomous chromosome movements towards the spindle poles in anaphase.
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