Results 1 to 10 of about 1,783,256 (340)
Localization of 18S ribosomal genes in suckermouth armoured catfishes Loricariidae (Teleostei, Siluriformes) with discussion on the Ag-NOR evolution. [PDF]
Comp Cytogenet, 2012 The family Loricariidae with about 690 species divided into six subfamilies, is one of the world’s largest fish families. Cytogenetic studies conducted in the family showed that among 90 species analyzed the diploid number ranges from 2n=38 in Ancistrus ...
Alves AL +6 more
europepmc +2 more sources
Quantification of Ag-NOR proteins using Ag-NOR staining on western blots. [PDF]
Journal of Histochemistry & Cytochemistry, 1994 Ribosomal genes are associated with a set of silver-stained nucleolar proteins, the Ag-NOR proteins, whose amount is directly related to the duration of the cell cycle. Quantification of Ag-NOR proteins by image analysis is presently used to evaluate the rate of proliferation of cancer cells and nucleolar activity.
P, Roussel +2 more
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Ag-NOR proteins and rDNA transcriptional activity in plant cells. [PDF]
Journal of Histochemistry & Cytochemistry, 1990 In this work we used Allium cepa root meristem cells in actively growing conditions and under treatment with the protein synthesis inhibitors cycloheximide (CHM) and puromycin. Morphological and quantitative results indicate that these drugs induce dramatic alterations in nucleolar structure reflected by a decrease of nucleolar size, much more evident
F J, Moreno +2 more
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Ag‐NOR" proteins are present when transcription is impaired
Biology of the Cell, 1984 The use of nucleolar silver staining in plant cells in conditions of impaired transcription, either natural (quiescent cells) or induced (actinomycin D, ethidium bromide and cordycepin treatments), shows that nucleoli with very low transcription rates, compared with controls, contain similar amounts of argyrophilic proteins, as well as the same ...
Sánchez-Pina, M. Amelia +3 more
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Interindividual and intercellular polymorphisms of Ag-NOR pattern in mink embryo siblings [PDF]
Genetics Selection Evolution, 1994 La variabilite de la coloration a l'argent des regions des organisateurs nucleolaires (Ag-NOR) a ete etudiee sur des hepatocytes de 9 embryons de vison, germains de portee et incluant une paire de jumeaux monochorioniques, presumes monozygotes. A la fois le nombre des Ag-NOR et la taille moyenne des taches d'argent par cellule se sont trouves etre ...
Isakova GK
doaj +3 more sources
Cytogenetics and sperm ultrastructure of Atelopus spumarius (Anura, Bufonidae) from the Brazilian Amazon [PDF]
Genetics and Molecular Biology, 2013 The current taxonomy of most Atelopus species is based on morphological and color data only. Recent studies suggest that A. spumarius may represent a species complex assigned under the same name.
Sérgio Siqueira +3 more
doaj +6 more sources
Chromosome complement, C-banding, Ag-NOR and replication banding in the zebrafishDanio reio
Chromosome Research, 1996 The chromosome complement of Danio rerio was investigated by Giemsa staining and C-banding, Ag-NORs and replication banding. The diploid number of this species is 2n = 50 and the arm number (NF) = 100. Constitutive heterochromatin was located at the centromeric position of all chromosome pairs.
Daga, Rafael R. +2 more
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Chromosome analysis in Saccodon wagneri (Characiformes) and insights into the karyotype evolution of Parodontidae [PDF]
Neotropical Ichthyology, 2021 Parodontidae is a relatively small group of Neotropical characiform fishes consisting of three genera (Apareiodon, Parodon, and Saccodon) with 32 valid species.
Mauro Nirchio +7 more
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Caryologia, 2023 The genus Capoeta is an important taxon covering a wide distribution in Türkiye. However, only a few genetic studies on Capoeta species reported from Türkiye. There is no cytogenetical study in Capoeta aydinensis Turan, Küçük, Kaya, Güçlü & Bektaş, 2017,
Sevgi Unal-Karakus +2 more
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Caryologia, 2022 The objectives of this study were to examine size, shape, diploid number (2n), fundamental number (NF), NORs region, and distribution of microsatellite by using Fluorescence in situ hybridization technique (FISH) and to establish the karyotype and ...
Sumalee +3 more
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