Results 21 to 30 of about 1,634 (113)

Derivative chromosomes involving 5p large rearranged segments went unnoticed with the use of conventional cytogenetics

Molecular Cytogenetics, 2018
Background In countries where comparative genomic hybridization arrays (aCGH) and next generation sequencing are not widely available due to accessibility and economic constraints, conventional 400–500-band karyotyping is the first-line choice for the ...
Emiy Yokoyama, Victoria Del Castillo, Silvia Sánchez, Sandra Ramos, Bertha Molina, Leda Torres, María José Navarro, Silvia Avila, José Luis Castrillo, Benilde García-De Teresa, Bárbara Asch, Sara Frías   +11 more
doaj   +1 more source

FREQUÊNCIA DE ALTERAÇÕES CITOGENÉTICAS DETECTADAS POR HIBRIDIZAÇÃO IN SITU FLUORESCENTE NA LEUCEMIA LINFOCÍTICA CRÔNICA

Hematology, Transfusion and Cell Therapy
A leucemia linfocítica crônica (LLC) caracteriza-se pela alta frequência de alterações genéticas, que se correlacionam com o prognóstico da doença.
FK Marques, IR Borges, VD Fonseca, SP Frade, LV Ramos, RS Ribeiro   +5 more
doaj   +1 more source

Abnormal meiotic behavior in three species of Crotalaria Comportamento meiótico anormal em três espécies de Crotalaria

Pesquisa Agropecuária Brasileira, 2009
The objective of this work was to compare the meiotic behavior and pollen grain viability of three species of Crotalaria. Slides for meiotic analysis were prepared by the air-drying technique.
Kátia Ferreira, Giovana Augusta Torres, Isabelle Vilela de Carvalho, Lisete Chamma Davide   +3 more
doaj   +1 more source

Hallazgos citogenéticos y edad materna en pacientes con Síndrome Down en un hospital de referencia pediátrico en el Perú

Revista de la Facultad de Medicina Humana, 2023
Introducción: El síndrome Down es un trastorno congénito originado por una trisomía total o parcial del cromosoma 21 y es considerada la causa genética más común de malformaciones congénitas y discapacidad intelectual.
Yesica Llimpe Mitma de Barrón, Maribel Susana Ccoyllo Álvarez, Milana Trubnykova, Rocío Margarita González Moreno   +3 more
doaj   +1 more source

IMPACT ON LEUKEMIC TRANSFORMATION OF HYPERDIPLOID KARYOTYPE IN PEDIATRIC MYELODYSPLASTIC SYNDROME

Hematology, Transfusion and Cell Therapy
Introduction: Myelodysplastic syndrome (MDS) comprises a heterogeneous group of clonal hematopoietic stem cell diseases. MDS is characterized by bone marrow dysplasias, peripheral blood cytopenias, and has an increased risk of progression to acute ...
GF Lima, BF Silva, IC Gonçalves, RS Torres, EF Rodrigues, VL Lovatel, TS Fernandez   +6 more
doaj   +1 more source

Apomixia em Manihot esculenta e em seus híbridos interespecíficos Apomixis in Manihot esculenta and in its interespecific hybrids

Pesquisa Agropecuária Brasileira, 2001
O objetivo deste trabalho foi estudar a citogenética e a morfologia do saco embrionário dos clones EB1 (Manihot esculenta Crantz) e EB12 (geração F3 de M. esculenta x M. glaziovii Muell), dos híbridos F1 e F2 de M. neusana Nassar x M.
Evie dos Santos de Sousa
doaj   +1 more source

Un ravissant souvenir de mon stage chez le laboratoire de Jérôme Lejeune. Un recuerdo agradable de mi estadía en el laboratorio de Jérôme Lejeune

Anales de la Facultad de Medicina, 2016
Para el Nº2 del Volumen 2 de AnFaMed, solicitamos al Prof. Máximo Drets que escribiera un artículo de revisión sobre los orígenes de la genética y la citogenética humana clínica en el Uruguay.
Máximo Drets
doaj   +2 more sources

Citogenética de seis genótipos naturais e introduzidos de Hemarthria altissima (Poiret) Stapf & Hubbard (Gramineae) Cytogenetics of six nature and introduced genotypes of Hemarthria altissima (Poiret) Stapf & Hubbard (Gramineae)

Ciência Rural, 1998
Quatro genótipos africanos e dois genótipos brasileiros da gramínea forrageira Hemarthria altissima foram estudados quanto ao número de cromossomos e comportamento meiótico. Foi constatado que o número básico de cromossomos nos genótipos estudados é x=9.
Solange Bosio Tedesco, Alice Battistin, José Francisco Montenegro Valls   +2 more
doaj   +1 more source

Cryptic diversity and recent diversification in the Pyrrhulina australis species complex (Characiformes, Lebiasinidae) revealed by mitochondrial DNA

Journal of Fish Biology, EarlyView.
Abstract Pyrrhulina australis Eigenmann & Kennedy, 1903, is widely distributed across the main hydrographic basins of South America. The taxonomic integrity of this species is nevertheless challenged by the lack of clear diagnostic characters, its marked geographic variation and the morphological overlap with its congeners. In this context, the present
Taina Barbosa De Souza, Daniela Cristina Ferreira, Hugmar Pains Da Silva, Carolina B. Machado, Claudio Oliveira, André L. Netto‐Ferreira, Paulo C. Venere   +6 more
wiley   +1 more source

Ultrasound features in early pregnancy for predicting abnormal karyotype in first‐trimester miscarriage

Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 3, Page 376-384, March 2026.
ABSTRACT Objective To investigate whether combining abnormal morphological features observed on ultrasound in live pregnancies that ended in a first‐trimester miscarriage can predict an abnormal karyotype. Methods This retrospective observational cohort study was conducted at the early‐pregnancy assessment unit at University College London Hospital ...
T. Setty, S. L. Kastora, T. Tellum, J. Farren, E. Jauniaux, D. Jurkovic   +5 more
wiley   +1 more source