Results 51 to 60 of about 2,914 (162)

Species and sex comparisons of karyotype and genome size in two Kurixalus tree frogs (Anura, Rhacophoridae)

Acta Herpetologica, 2017
Kurixalus is a rhacophorid genus of tree frogs that are similar in morphology but vary in reproductive behavior. We investigated the cytogenetic features and genome size using conventional G-banding, C-banding and silver-staining techniques, fluorescence
Shun-Ping Chang, Gwo-Chin Ma, Ming Chen, Sheng-Hai Wu   +3 more
doaj   +1 more source

Overexpression of rRNA genes in a patient with intellectual disability and familial 13p+ chromosome

Бюллетень сибирской медицины, 2018
A study of a child with intellectual disability revealed an enlarged p-arm in chromosome 13 and amplified rDNA. qRT-PCR showed an approximately 6-fold increased level of rRNA in the patient’s blood samples.
I. S. Kolesnikova, A. A. Tulupov, A. A. Dolskiy, M. A. Lemskaya, A. A. Savelov, E. D. Petrovsky, A. A. Antonov, Yu. V. Maksimova, A. R. Shorina, I. G. Sergeeva, A. S. Telepova, A. S. Graphodatsky, D. V. Yudkin   +12 more
doaj   +1 more source

Cytogenetic and morphological characterization of lima bean germplasm from the Brazilian Northeast region with a focus on genetic resource conservation

Crop Breeding and Applied Biotechnology
In Brazil, lima bean is mainly grown in the Northeast region, where it is widely consumed and is of major economic importance. We evaluated different Phaseolus lunatus accessions from the Northeast of Brazil using agromorpholog- ical markers and CMA/DAPI
Eugênia Cristina Nascimento Medeiros, Yago de Oliveira Martins, Breno Machado de Almeida, Ângela Celis de Almeida Lopes, Regina Lúcia Ferreira Gomes, Ana Paula Peron, Lidiane de Lima Feitoza   +6 more
doaj  

Comparative cytogenetic studies of Bufo ictericus, B. paracnemis (Amphibia, Anura) and an intermediate form in sympatry

Genetics and Molecular Biology, 2003
Specimens of Bufo ictericus, Bufo paracnemis and a third type, considered an intermediate subgroup between these species, were cytogenetically studied by conventional Giemsa staining, C-banding and staining of the nucleolus organizer region (NOR).
Azevedo MFC, Foresti F., Ramos PRR, Jim J   +3 more
doaj  

EFECTO DEL CHOQUE TÉRMICO SOBRE LA EFICIENCIA EN LA TRIPLOIDIZACIÓN Y LA SOBREVIVENCIA DE LARVAS DE Rhamdia quelen EFFECT OF THERMALSHOCK ON TRIPLOIDIZATION EFFICIENCY AND SURVIVAL OF LARVAE OF Rhamdia quelen

Revista U.D.C.A Actualidad & Divulgación Científica, 2012
La triploidía permite mejoras en el cultivo de peces, ya que se evita la madurez sexual, controla la superpoblación y aumenta la estabilidad en el desarrollo.
Liliana Cardona, Martha Olivera, Mónica Botero, Ariel Tarazona   +3 more
doaj  

[Nucleolus organizer regions in prostatic intraepithelial neoplasm].

Pathologica, 1991
Using a silver staining technique, Nucleolar Organizer Region-associated proteins (NORs) were evaluated on paraffin sections of 16 resected prostatic adenocarcinomas stage A1. Then 30 histological areas was selected which comprised 6 areas for each grade of Prostatic Intraepithelial Neoplasia: PIN 1, PIN 2, PIN 3, 6 areas of normal glandular prostatic ...
S, Sentinelli, E, Rondanelli
openaire   +1 more source

Patterns of ribosomal DNA distribution in hylid frogs from the Hypsiboas faber and H. semilineatus species groups

Genetics and Molecular Biology, 2008
We performed a comparative analysis of the nucleolus organizer region (NOR) distribution in the karyotypes of hylid frogs from two different taxonomic groups, Hypsiboas faber and H. semilineatus. Silver nitrate staining of NORs (Ag-NORs) and fluorescence
Rosana dos Reis Abrante Nunes, Valéria Fagundes   +1 more
doaj  

Differences in the location of nucleolus organizer regions in European vespertilionid bats

Cytogenetics and Cell Genetics, 2008
The karyotypes of European vespertilionid bats are distinguished by only a few, easily detectable differences in their G-banding patterns. Most rearrangements can be identified as Robertsonian translocations. Yet, there are surprising differences in the location of active nucleolus organizer regions (NORs), as revealed by silver staining. The ancestral
openaire   +2 more sources

Argyrophilic nucleolar organizer regions (AgNOR) in gastric cell of obese patients with bariatric surgery. [PDF]

Medicine (Baltimore)
Gamsizkan Z, Kantarcioğlu Coşkun S, Eröz R, Pehlivan M.   +3 more
europepmc   +1 more source

Centromeric retrotransposons shape chromosomal evolution beyond pericentromeric regions. [PDF]

Mob DNA
Poretti M, Mandáková T, Choudhury RR, Wuetschert L, Lysak MA, Parisod C.   +5 more
europepmc   +1 more source