Results 21 to 30 of about 1,664,726 (300)

Cytogenetic Findings in Mentally Retarded Iranian Patients

open access: yesBalkan Journal of Medical Genetics, 2012
We conducted a cytogenetic study on 865 individuals with idiopathic mental retardation (MR) who were admitted to the Cytogenetics Department of the Iran Blood Transfusion Organisation (IBTO) Research Centre, Tehran, Iran; these were performed on blood ...
Nasiri F.   +5 more
doaj   +1 more source

Insect Sex Determination Manipulated by Their Endosymbionts: Incidences, Mechanisms and Implications

open access: yesInsects, 2012
The sex-determining systems of arthropods are surprisingly diverse. Some species have male or female heterogametic sex chromosomes while other species do not have sex chromosomes.
Masaya Watanabe   +2 more
doaj   +1 more source

Prenatal Diagnosis and Pregnancy Outcome Analysis of High-risk Fetuses Suggested by Noninvasive Prenatal Screening [PDF]

open access: yesZhongguo quanke yixue, 2022
Background Noninvasive prenatal screening is more effective in screening for fetal aneuploidy than does traditional serological screening. We attempted to analyze the real-world data about the positive predictive value (PPV) for chromosome aneuploidy ...
Yan LUO, Bingyi ZHAO, Yanmei SUN, Haishen TIAN, Yali LI, Yanshang ZHANG, Jian GAO, Zhiqiang CUI
doaj   +1 more source

Multicolour interphase cytogenetics: 24 chromosome probes, 6 colours, 4 layers [PDF]

open access: yes, 2011
From the late 1980s onwards, the use of DNA probes to visualise sequences on individual chromosomes (fluorescent in-situ hybridisation - FISH) revolutionised the study of cytogenetics.
Ellis, Michael   +9 more
core   +1 more source

Chromosomal damage among medical staff occupationally exposed to volatile anesthetics, antineoplastic drugs, and formaldehyde

open access: yesScandinavian Journal of Work, Environment & Health, 2013
OBJECTIVES: Structural chromosomal aberrations in blood lymphocytes represent a biomarker for cellular damage caused by genotoxic carcinogens and are an indicator of increased cancer risk.
Ludovit Musak   +9 more
doaj   +1 more source

The effects of biological and life-style factors on baseline frequencies of chromosome aberrations in human lymphocytes

open access: yesArchives of Pharmacy Practice, 2014
Objective: This study investigated the influence of sex and ageing on chromosomal damage and the role of life-style habits on the frequency of chromosomal aberrations (CAs) in peripheral blood lymphocytes (PBLs) of healthy Bosnian subjects. Materials and
Hilada Nefic, Jasmin Musanovic
doaj   +1 more source

Classical and molecular cytogenetic studies in some cattle breeds

open access: yesItalian Journal of Animal Science, 2010
Numerical autosome aberrations have a few importance in the animal breeding since the carriers show generally abnormal body conformation. For this reason, these abnormalities are systematically eliminated from the animal population by the breeders during
G. Succi   +7 more
doaj   +1 more source

Independent stratum formation on the avian sex chromosomes reveals inter-chromosomal gene conversion and predominance of purifying selection on the w chromosome [PDF]

open access: yes, 2014
We used a comparative approach spanning three species and 90 million years to study the evolutionary history of the avian sex chromosomes. Using whole transcriptomes, we assembled the largest cross-species dataset of W-linked coding content to date.
Wright, Alison E   +9 more
core   +1 more source

Resúmenes de la Literatura Actual

open access: yesRevista Colombiana de Obstetricia y Ginecología, 1971
Intervalo entre la conizacion cervical y la histerectomía Un método enzimático para el diagnostico de la mola hidatidiforme Carcinoma de la vulva Fenotipo de Turner con cromosomas sexuales normales Phenotypic aspects of sex chromosome aberrations La
Federación Colombiana de Obstetricia y Ginecología
doaj   +1 more source

Early events in the evolution of the Silene latifolia Y chromosome: Male specialization and recombination arrest [PDF]

open access: yes, 2007
Understanding the origin and evolution of sex chromosomes requires studying recently evolved X-Y chromosome systems such as those in some flowering plants.
Georgiev, Sevdalin   +8 more
core   +1 more source

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