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Paracentric inversion involving a NOR-bearing chromosome of rainbow trout (Oncorhyncus mykiss): Electron microscopy studies of the synaptonemal complex
(1996-07-01)
Cytogenetic studies conduced on a sample of 19 specimens of rainbow trout (Oncorhyncus mykiss) showed that 6 presented two chromosomes with a single subterminal AgNOR on the short arms and 13 presented one chromosome with ...
Analysis of NOR distribution in cultivated and naturalized stocks of rainbow trout (Oncorhynchus mykiss)
(Sociedade Brasileira de Genética, 2002-01-01)
In salmonid species, nucleolar organizing regions (NORs) have frequently been found on a single chromosome pair. However, some other, smaller yet active NORs have also been described. In the present study, NORs were found ...
NUCLEOLAR CHROMOSOME VARIANTS IN STERNOPYGUS-MACRURUS (PISCES, STERNOPYGIDAE) FROM 3 BRAZILIAN RIVER BASINS
(Univ Florence Botany Inst, 1993-01-01)
The karyotypes, location of nucleolus organizer regions (NOR) and constitutive heterochromatin pattern of Sternopygus macrurus (Pisces, Gymnotoidei) of natural populations from the Amazon River, Sao Francisco River and ...
Nucleolar chromosome variants in Sternopygus macrurus (Pisces, Sternopygidae) from three Brazilian river basins
(1993-01-01)
The karyotypes, location of nucleolus organizer regions (NOR) and constitutive heterochromatin pattern of Sternopygus macrurus (Pisces, Gymnotoidei) of natural populations from the Amazon River, Sao Francisco River and ...
Karyotype and NOR conservatism with heterochromatin reorganization in Neotropical Bryconids
(1996-01-01)
Cytogenetic studies on Bryconid fishes have shown the occurrence of karyotype and NOR conservatism and heterochromatin reorganization. The present data on three species representative of the migratory genus Brycon corroborate ...
Avaliação da técnica de coloração AgNOR em testículos de ovinos
(Universidade Federal de Minas Gerais, Escola de Veterinária, 2015-04-01)
The silver staining technique for AgNOR nucleolar organizer regions (NORs) is characterized by marking proteins linked to the ribosomal ribonucleic acid, evaluating cell proliferation. The aim was to study the validity of ...
Application of Natural Organic Residues as Adsorbents to Remove Lead from Waters
(2019-08-01)
The contamination of the environment by potentially toxic metals is highlighted by possible impacts of their high availability. Thus, the development of alternative absorbents that can be used in the remediation of ...
Cytogenetic analysis of three sea catfish species (Teleostei, Siluriformes, Ariidae) with the first report of Ag-NOR in this fish family
(Sociedade Brasileira de Genética, 2010-01-01)
Despite their ecological and economical importance, fishes of the family Ariidae are still genetically and cytogenetically poorly studied. Among the 133 known species of ariids, only eight have been karyotyped. Cytogenetic ...
Argyrophilic nucleolar organizer regions (AgNORs) in odontogenic myxoma (OM) and ameloblastic fibroma (AF)
(2001-08-29)
Ten cases of odontogenic myxoma (OM) and six cases of ameloblastic fibroma (AF) were subjected to comparative analysis by the AgNOR technique, in order to determine a possible difference in cell proliferation index between ...