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Nucleolus-organizer regions and heterochromatin in three species of Bovidae
Genetica, 1987Ag-NOR staining and a counterstain-enhanced fluorescence technique (chromomycin A3/distamycin A/DAPI staining = CDD-method) have been applied to ibex (Capra ibex L.), chamois (Rupicapra rupicapra L.) and bison (Bison bison L.) chromosomes. Chromomycin A3 visualization led to a well defined R-banding pattern along the chromosome arms and to a clear ...
B, Mayr, E, Tesarik, H, Auer, H, Burger
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, 1991 Nucleolus organizer regions and nucleoli: cytological findings
1987For a better understanding of the nucleolar structures it is advisable to make a distinction between the nucleolus organizer region and the ...
H. G. Schwarzacher, F. Wachtler
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Variant nucleolus organizing regions and the risk of Down syndrome
Clinical Genetics, 1989In order to determine whether nucleolus organizing region (NOR) heteromorphisms of the acrocentric chromosomes could identify individuals at risk for having offspring with trisomy 21, a comparison was made between 43 parents of individuals with Down syndrome and 39 controls. NORs, as visualized by silver staining, were analyzed by mean number per cell,
J E, Green +4 more
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New insights into the effects of extra nucleolus organizer regions
Human Genetics, 1986Chromosome studies were carried out in four members of a sibship with a 15p+ chromosome. Two carriers had normal offspring, one was unmarried, and the index case had three abortions and no live children. By means of different banding techniques, up to four satellites and four stalks could be observed on the abnormal chromosome.
A, Pérez-Castillo +2 more
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Nucleolus organizer regions and heterochromatin in the zebu (Bos indicus L.)
Theoretical and Applied Genetics, 1987Ag-NOR staining and a counterstain enhanced fluorescence technique (chromomycin A3/distamycin A/DAPI-staining = CDD-method) and G-banding, respectively, have been applied to the zebu (Bos indicus L.) chromosomes. The nucleolus organizer regions (NORs) were found in the telomeric regions of chromosomes nos. 2, 3, 4, 11, and 28.
B, Mayr, K, Gruber
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Localisation of nucleolus-organising regions in interphase cells
Cell and Tissue Research, 1979A technique based on the use of silver solutions, which selectively stains the nucleolus-organising regions (NORs) in chromosomes, was applied to interphase Ehrlich tumour cells. The results indicate that nucleolar fibrillar centres correspond to the NORs.
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The Effect of Ph on Silver Staining of Nucleolus Organizer Regions
Stain Technology, 1987The effect of pH on silver staining of the nucleolus organizer regions (NORs) of human chromosomes has been investigated between pH 6.5 and 12.0. Nonvolatile mixtures of ethanolamine and ethanolammonium nitrate replaced the ammonia of standard procedures.
B E, Lomholt, J M, Toft
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A simple one-step procedure for staining the nucleolus organizer regions
Experientia, 1979A simple silver staining technique for routine use is described by which the nucleolus organizer regions of mammalian chromosomes, including those of mouse chromosomes, are stained selectively.
M, Münke, H, Schmiady
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Variable conservation of nucleolus organizer regions during karyotypic evolution in Microtidae
Genome, 1990The location of the nucleolus organizer regions (NORs) was studied in four species of Microtidae (Microtus nivalis, M. cabrerae, M. arvalis, and Arvicola sapidus). The comparative study of these locations shows that some NORs have been conserved despite the chromosome rearrangements that have occurred through karyotypic evolution, while others have ...
A, Sánchez +3 more
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