Results 91 to 100 of about 361,014 (259)

Disease-associated epigenetic changes in monozygotic twins discordant for schizophrenia and bipolar disorder

open access: yesHuman Molecular Genetics, 2011
Studies of the major psychoses, schizophrenia (SZ) and bipolar disorder (BD), have traditionally focused on genetic and environmental risk factors, although more recent work has highlighted an additional role for epigenetic processes in mediating ...
E. Dempster   +11 more
semanticscholar   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

open access: yesExperimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Discordance in monozygotic Parkinson's disease twins – continuum or dichotomy?

open access: yesAnnals of Clinical and Translational Neurology, 2019
Differences in concordance rates between monozygotic and dizygotic twin pairs with Parkinson's disease (PD) have been used to estimate genetic influences in PD pathogenesis.
Alexander Balck   +6 more
doaj   +1 more source

Does Early Life Health Predict Schooling Within Twin Pairs? [PDF]

open access: yes
A large number of studies in labor economics estimate the returns to schooling using data on monozygotic twins, under the assumption that educational attainment is random within twin pairs. This exogeneity assumption has been commonly questioned, however,
Lundborg, Petter   +2 more
core  

Long‐term impact of stressful life events on breast cancer risk: A 36‐year genetically informed prospective study in the Finnish Twin Cohort

open access: yesInternational Journal of Cancer, Volume 158, Issue 6, Page 1489-1497, 15 March 2026.
What's new? Breast cancer results from a combination of genetic and environmental causes, and the cumulative effect of stressful life events may be a contributing factor. Here, the authors analyzed data from cohort and twin‐pair studies including 36 years of follow‐up to find out how stressful life events affect breast cancer risk. They found that even
Elissar Azzi   +5 more
wiley   +1 more source

Beyond DNA: Epigenetics and Proteomics in Forensic Science [PDF]

open access: yes, 2016
The use of genetic evidence in criminal cases is well established and has improved the public opinion and credibility of forensic science. However, several shortcomings associated with current genetic profiling techniques exist. Scientific research aimed
Eilerts, Diane F
core   +1 more source

The relationship between Hippocampal asymmetry and working memory processing in combat-related PTSD: a monozygotic twin study [PDF]

open access: yes, 2012
BACKGROUND: PTSD is associated with reduction in hippocampal volume and abnormalities in hippocampal function. Hippocampal asymmetry has received less attention, but potentially could indicate lateralised differences in vulnerability to trauma.
Clark, C.   +8 more
core   +2 more sources

Viruses in the fecal microbiota of monozygotic twins and their mothers

open access: yesNature, 2010
Viral diversity and life cycles are poorly understood in the human gut and other body habitats. Phages and their encoded functions may provide informative signatures of a human microbiota and of microbial community responses to various disturbances, and ...
A. Reyes   +6 more
semanticscholar   +1 more source

CRISPR‐Cas9‐Generated TXNDC15 c.560delA Homozygous Mouse Model Exhibits Meckel–Gruber Syndrome Phenotype

open access: yesgenesis, Volume 64, Issue 1, February 2026.
ABSTRACT To determine whether TXNDC15 variation causes Meckel–Gruber syndrome (MKS), we assessed the pathogenicity of the frameshift variant c.560delA. A CRISPR–Cas9 generated mouse model carrying the equivalent Txndc15 c.512delA mutation was analyzed at embryonic day 15.5.
Yang Liu   +10 more
wiley   +1 more source

Is humn mating adventitious or the result of lawful choice? A twin study of mate selection. [PDF]

open access: yes, 1993
Inventory data on a large sample of middle-aged twins and their spouses confirmed that spousal pairs are consistently but weakly similar on traits of personality, interests, talents, and attitudes.
Lykken, D.T., Tellegen, A.
core  

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