Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"monozygotic twins"”.
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Multiple Sclerosis: Studies of the Interferon system and search for infectious agents
… investigated loci and MS. Approximately 70% of monozygotic twins are discordant for MS indicating that environmental factors contribute to the development of the disease. We investigated, in 3 pairs of monozygotic twins discordant for MS, serological differences that could be important for the …
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Parent-child mutuality: An examination of its influences and stability in a twin sample
… would be a genetic influence on PCM such that monozygotic twins would be more similar in PCM than dizygotic twins. Data from 80 families of twins who participated in the Southern Illinois Twins and Siblings Study (SITSS) were utilized for the current study. Parents completed questionnaires …
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An Investigation Into The Neural Nature Of Persecutory Ideation
… with unique environmental influence in community monozygotic twins. In our second study we aimed to replicate the task-based finding in two resting-state samples to demonstrate generalizability of the mechanism; however, confirmatory analyses did not replicate. In summary, the posited vmPFC/OFC - …
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Natural variation in the human plasma lipidome signature using mass spectrometry: relevance to healthy ageing
… Twin Study (OATS), using n=75 pairs of monozygotic twins and n=55 pairs of dizygotic twins. Lipidomics was conducted using liquid chromatography - mass spectrometry (LC-MS). Major findings include a global reduction in lipid abundance in the oldest subjects (>95 years), which was steeper …
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A Study of Craniofacial Asymmetry in Monozygotic and Dizygotic Twins Using Posteroanterior Radiographs
… asymmetry in a prospective study among monozygotic (identical) versus dizygotic (fraternal) twins and sibling pairs. Posteroanterior radiographs that had previously been collected were used in this study and the zygosity of the twins had previously been determined. We hypothesized that …
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The Genetic Aetiology of Ectopic Maxillary Canine Teeth
… of the methylation status of discordant monozygotic twins.
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A linkage study of autism using multipoint sib-pair analysis
… a significantly higher concordance rate among monozygotic twins compared to dizygotic twins. To explore the theory of a biological basis of autism, molecular genetic strategies were employed in this study. Two collaborative groups (Stanford University in the U.S.A. and Edith Cowan …
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Assistierte Reproduktion beim Pferd
… of equine embryos can be used to produce monozygotic twins and for embryo sexing. The efficiency of embryo production by extracorporal fertilization in the horse is very low so far. Equine oocytes can be recovered by one of four methods: surgically, by transcutaneous flank puncture, by …
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DNA methylation variability at the crossroads of stochasticity, genetics, and environment
… shared homogeneous genetic background outside of monozygotic twins. Previously, using public data, I performed a screen for variably-methylated loci and found hundreds of loci showing methylation variability in the absence of local genetic variants. Methylation at these loci was then assessed in …
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Human Inborn Errors of Immunity: Tuberculosis, Autoimmunity, and Beyond
… genetic risk of developing TB disease between monozygotic twins. Later, the clinical and genetic characterization of a rare and severe disease caused by weakly virulent and normally harmless mycobacteria, such as the BCG vaccine substrain, now recognized as Mendelian Susceptibility to …
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Asymmetry and discordance in Carabelli's trait and the hypocone: do MZ and DZ twins point to common underlying epigenetic factors?
… exhibit identical trait expressions, and (2) MZ twins, with identical genotypes, should display identical phenotypes. However, antimeres exhibit some asymmetry in trait expression and MZ twins likewise exhibit some level of discordant trait expression. Antimere asymmetry and MZ twin discordance …