Results 1 to 10 of about 174,287 (174)

Sex-influenced DNA methylation differs by placental cell type [PDF]

Biology of Sex Differences
Background Sex differences in the function and morphology of the human placenta can lead to sex differences in pregnancy outcomes. X chromosome inactivation (XCI) is the primary mechanism for dosage compensation between the sexes, and is strongly ...
Jiyoung Han, Amy M. Inkster, Victor Yuan, Maria S. Peñaherrera, Wendy P. Robinson   +4 more
doaj   +2 more sources

FISH analysis for chromosomes 13, 16, 18, 21, 22, X and Y in all blastomeres of IVF pre-embryos from 144 randomly selected donated human oocytes and impact on pre-embryo morphology [PDF]

Human Reproduction, 2003
The data are compiled from two multicentre, prospectively randomized studies on the effect of follicular fluid meiosis-activating sterol (FF-MAS) on human oocytes. The donated oocytes were exposed either to test doses of FF-MAS or to control solutions.
S, Ziebe, K, Lundin, A, Loft, C, Bergh, A, Nyboe Andersen, U, Selleskog, D, Nielsen, C, Grøndahl, H, Kim, J-C, Arce   +9 more
openaire   +2 more sources

Role of Gene Length in Control of Human Gene Expression: Chromosome-Specific and Tissue-Specific Effects

International Journal of Genomics, 2021
This study was carried out to pursue the observation that the level of gene expression is affected by gene length in the human genome. As transcription is a time-dependent process, it is expected that gene expression will be inversely related to gene ...
Jay C. Brown
doaj   +1 more source

Change in the karyotype of the embryo as a cause of spontaneous abortion in the first trimester

Вісник Харківського Національного Університету Імені В.Н. Каразіна: Серія Біологія, 2021
Currently, one of the most actual health problems in the world is the problem of a spontaneous abortion. Chromosomal abnormalities are one of the main reasons of early abortion, stillbirth or the birth of a child with multiple congenital malformations ...
O. Feskov, I. Feskova, Ye. Zhylkova, V. Rudenko, O. Blazhko   +4 more
doaj   +1 more source

Chromosome painting in three-toed sloths: a cytogenetic signature and ancestral karyotype for Xenarthra

BMC Evolutionary Biology, 2012
Background Xenarthra (sloths, armadillos and anteaters) represent one of four currently recognized Eutherian mammal supraorders. Some phylogenomic studies point to the possibility of Xenarthra being at the base of the Eutherian tree, together or not with
Azevedo Nathália F, Svartman Marta, Manchester Andrea, de Moraes-Barros Nádia, Stanyon Roscoe, Vianna-Morgante Angela M   +5 more
doaj   +1 more source

Human ring chromosome registry for cases in the Chinese population: re-emphasizing Cytogenomic and clinical heterogeneity and reviewing diagnostic and treatment strategies

Molecular Cytogenetics, 2018
Background Constitutional ring chromosomes are rare orphan chromosomal disorders. Ring chromosome syndrome featuring growth retardation and mild to intermediate intellectual disability is likely caused by the dynamic behavior of ring chromosome through ...
Qiping Hu, Hongyan Chai, Wei Shu, Peining Li   +3 more
doaj   +1 more source

Quality of Blastocysts Created by Embryo Splitting: A Time-Lapse Monitoring and Chromosomal Aneuploidy Study

Cell Journal, 2020
Objective: The aim of this study was to screen the potential of human embryos to develop into expanding blastocysts following in vitro embryo splitting and then assess the quality of the generated blastocysts based on chromosomal characteristics and ...
Marjan Omidi, Mohammad Ali Khalili, Iman Halvaei, Fatemeh Montazeri, Seyed Mehdi Kalantar   +4 more
doaj   +1 more source

Chromosome painting in the manatee supports Afrotheria and Paenungulata

BMC Evolutionary Biology, 2007
Background Sirenia (manatees, dugongs and Stellar's sea cow) have no evolutionary relationship with other marine mammals, despite similarities in adaptations and body shape.
Zori Roberto T, McGuire Peter M, Gray Brian A, Stone Gary, Dennis Thomas R, Burkett Sandra, Kellogg Margaret E, Stanyon Roscoe   +7 more
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Biogeographical karyotypic variation of Rhinophylla fischerae (Chiroptera: Phyllostomidae) suggests the occurrence of cryptic species

Comparative Cytogenetics, 2010
The genus Rhinophylla Peters, 1865 (Carolliinae: Phyllostomidae) comprises three species: R. pumilio Peters, 1865, R. fischerae Carter, 1966 and R. alethina Handley, 1966. Only the first two species have been cytogenetically studied to date.
A Gomes, L Rodrigues, J Rissino, C Nagamachi, J Pieczarka   +4 more
doaj   +1 more source

Flying lemurs – The 'flying tree shrews'? Molecular cytogenetic evidence for a Scandentia-Dermoptera sister clade

BMC Biology, 2008
Background Flying lemurs or Colugos (order Dermoptera) represent an ancient mammalian lineage that contains only two extant species. Although molecular evidence strongly supports that the orders Dermoptera, Scandentia, Lagomorpha, Rodentia and Primates ...
Volobouev Vitaly, Tanomtong Alongkoad, Su Weiting, Wang Jinhuan, O'Brien Patricia CM, Fu Beiyuan, Nie Wenhui, Ferguson-Smith Malcolm A, Yang Fengtang   +8 more
doaj   +1 more source