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Ultrastructural localization of Ag‐NOR proteins and nucleic acids in reticulated nucleoli
Biology of the Cell, 1984Nucleoli with a thread‐like fibrillar structure found in several human breast cancer cells were investigated for the localization of Ag‐NOR proteins, RNA, DNA and associated nucleoproteins. Various cytochemical techniques were applied: the one‐step silver method for Ag‐NOR proteins, the Bernhard's staining preferential for RNP, the Feulgen‐like osmium ...
D, Ploton, M, Bendayan, J J, Adnet
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Visualization of Ag-NOR proteins on nucleolar transcriptional units in molecular spreads
Chromosoma, 1982Application of NOR silver staining to Pleurodeles oocyte nuclei showed selective silver deposits on the fibrillar part of the nucleoli in situ. This staining was adapted to nucleoli spread on grids, by a procedure which allowed the spreading of transcription units from both nucleoli and lampbrush chromosomes on the same grids.
N, Angelier +2 more
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Proliferative Activity in Oral Carcinomas Studied with Ag-NOR and Electron Microscopy
Ultrastructural Pathology, 2008This study was conducted on 61 patients (27 males and 34 females). The age ranged from 27 to 81 years (mean 54 years). All suffered from oral squamous cell carcinoma and were treated by surgery and deep X-ray therapy (DXT). The UICC and TNM classification and staging recommendations were used for evaluation of the patients.
Raja, Kummoona +2 more
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Ag‐NOR studies in a human lymphocyte culture: Are variants localized to specific chromosomes?
American Journal of Medical Genetics, 1995AbstractThe genomic activity and polymorphisms of nucleolus organizer regions (NORs) were studied in an individual with routinely used AgNO3 and Q‐banding techniques. The results demonstrate that (a) the mean number of NORs per metaphase spread was 7.4, (b) chromosomes 14, 13, 15, and 21 showed variations of Ag‐NOR in decreasing order, (c) chromosome ...
HOPWOOD, VL, PATHAK, S, OZEN, MUSTAFA
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Silver Nitrate Staining of Nucleolar Organizer Regions (Ag-NORs) in Plant Chromosomes
2023Silver nitrate staining to evidence the location of nucleolar organizer regions (Ag-NORs) in chromosomes is widely used as a classical method in plant cytogenetics. Here, we present the most used procedures and highlight some aspects in terms of their replicability by plant cytogeneticists.
Claudio, Palma-Rojas +2 more
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Ploidy independence of Ag-NOR number in neuroblastoma.
Laboratory investigation; a journal of technical methods and pathology, 1992Ag-NOR number and ploidy have potential use in predicting prognosis in malignancy. The issue of independence has not been conclusively studied. In contrast to other malignancies in neuroblastoma poor outcome is linked to diploidy, allowing independent analysis of the reaction of Ag-NOR status to outcome.A consecutive unselected series of 20 pediatric ...
C N, Brookes +5 more
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[Zasshi] [Journal]. Nihon Kyobu Geka Gakkai, 1994
A total of 86 resected cases with primary lung cancer were examined on relationships between argyrophil nucleolar organizer regions (Ag-NORs) and other prognostic factors and correlation between Ag-NORs and tumor doubling time (DT). Survival rates were compared between patients with low Ag-NOR counts and patients with high Ag-NOR counts.
K, Usuda +9 more
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A total of 86 resected cases with primary lung cancer were examined on relationships between argyrophil nucleolar organizer regions (Ag-NORs) and other prognostic factors and correlation between Ag-NORs and tumor doubling time (DT). Survival rates were compared between patients with low Ag-NOR counts and patients with high Ag-NOR counts.
K, Usuda +9 more
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Image analysis of Ag‐NOR proteins in transitional cell bladder cancer
The Journal of Pathology, 1993AbstractNuclear organizer regions (Ag‐NORs) were visualized using the standard silver‐staining technique in biopsy specimens from 112 bladder carcinomas. The area of individual Ag‐NOR dots and the area of Ag‐NOR protein/nucleus were measured using a Quantimet 570 image analyser and the results were then correlated with clinical, histological, and ...
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Functional Sexual Differences in Rat Mammillary Bodies: A Quantitative Ag-NOR Study
Cells Tissues Organs, 1996The mammillary bodies of the posterior hypothalamus are one of the CNS structures in which structural sexual dimorphism has already been described. This study quantifies the argyrophilic nucleolar organizer regions (NORs) of the neurons from this region in the male and female rats, the latter during two major phases of the estrous cycle (estrus ...
S, González-González +3 more
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Histochemistry and Cell Biology, 1995
The well-known technique of silver staining of the nucleolar organizer (Ag-NOR) is improved in contrast, selectivity and speed when performed with microwave irradiation. The Ag-NOR technique is a very useful tool for studies on the functional morphology and molecular architecture of the nucleolus, and is reputed to be one of the best techniques for ...
F J, Medina, A, Cerdido, R, Marco
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The well-known technique of silver staining of the nucleolar organizer (Ag-NOR) is improved in contrast, selectivity and speed when performed with microwave irradiation. The Ag-NOR technique is a very useful tool for studies on the functional morphology and molecular architecture of the nucleolus, and is reputed to be one of the best techniques for ...
F J, Medina, A, Cerdido, R, Marco
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