Results 211 to 220 of about 2,921 (283)
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Nucleolus organizer regions in two species of Bovidae
Journal of Heredity, 1979Silver-staining of nucleolar organizer regions (NORs) in somatic cells of Holstein cattle (Bos taurus) and European buffalo Murrah type (Bubalus bubalus) indicates that the NORs are located in the telomeres of chromosomes 2,3,4,11, and 29 of cattle and chromosomes 3,4,6,23, and 24 of buffalo. Chromosome identification was by Q-banding.
D, Di Berardino +2 more
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Nucleolus organizer regions in translocations involving acrocentric chromosomes
Cytogenetic and Genome Research, 1980Twenty-seven Robertsonian translocations and five translocations involving one acrocentric and one nonacrocentric chromosome were examined with the aid of three staining methods. The chromosomes were identified by Q-banding, and the slides were then destained and restained with a silver impregnation method for nucleolus organizing regions (NORs ...
M, Mikkelsen, A, Basli, H, Poulsen
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Revealing the unseen: the organizer region of the nucleolus
Journal of Cell Science, 2001 We carried out a high-resolution ultrastructural analysis of the nucleolus in mouse P815 cells by combining specific DNA and RNA staining, anti-fibrillarin immunolabeling, contrast enhancement by energy filtering TEM and phosphorus mapping by ESI to visualize nucleic acids.
Marco Biggiogera +5 more
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Nucleolus organizer regions in the chromosomes of the llama
Journal of Heredity, 1985Silver nitrate (Ag-AS) staining was applied to chromosome preparations from the llama (Lama glama). The NORs were detected on the secondary constrictions of the short arms or the stalks of five small acrocentric chromosome pairs.
B, Mayr +4 more
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Silver staining of nucleolus organizer regions during human spermatogenesis
Human Genetics, 1983The sizes and staining intensities of the nucleolus organizer regions (NORs) in human spermatogenesis were studied qualitatively and quantitatively with the silver (Ag)-staining technique. The Ag-stainability of the NORs is a measure of the transcriptional activity of the ribosomal RNA genes.
M, Schmid +3 more
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Ectopic nucleolus organizer regions (NORs) in human testicular tumors
Cytogenetic and Genome Research, 1986Investigation of nucleolus organizer regions (NORs) in hematopoietic malignancies has indicated that the distribution and rearrangement of these regions may be more important in malignant tissues than is their number. In one of the few studies thus far reported on NORs in human solid tumors, we describe here Ag-NORs in a group of human testicular germ ...
C D, DeLozier-Blanchet +2 more
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The Location of the nucleolus organizer regions in Drosophila hydei
Chromosoma, 1975The positions of the nucleolus organizer regions in metaphase chromosomes of Drosophila hydei were detected by in situ hybridization experiments. In agreement with earlier conclusions the nucleolus of the X chromosome was found to originate in a terminal region of the heterochromatic arm.
Hennig, W., Link, B., Leoncini, O.
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Nucleolus organizer region location and ‘ring’ chromosomes in the bharal
Experientia, 1980 Silver-staining has been used to identify the nucleolus organizer regions (NORs) in the bharal. These show homology with sheep, goat, cattle and aoudad. The association of the NORs on both telomeres of chromosome 3 results in a 'ring' chromosome.
L.M. Henderson, A.N. Bruère
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[Nucleolus organizer region--centromere translocation].
Annales de genetique, 1989A karyotype 45,XX,-13,-15,+psudic (13;15)(p12.9;11.200) was observed in a young woman after two spontaneous miscarriages. After R-, C-, and NOR - banding - the rearranged element was shown to include: the long arm, the active centromere, and the NOR of chromosome 13, followed by the inactivated centromere, and the long arm of chromosome 15.
M C, de Blois, M O, Rethoré, J, Lejeune
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Evidence for the inheritance of silver-stained nucleolus organizer regions
Human Genetics, 1978The inheritance of nucleolus organizer regions (NORs) was investigated by examining the degree of silver-staining in individual acrocentric chromosomes in two successive generations. The study was undertaken in six Down's syndrome children and their respective parents.
V D, Marković, R G, Worton, J M, Berg
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