Results 311 to 320 of about 349,469 (338)
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1954
Publisher Summary Despite the fact that more than two decades have passed since Kronacher began his studies on cattle twins, no single test or series of tests yet exists through which it would be possible to distinguish between monozygotic and dizygotic cattle twins in an objective manner.
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Publisher Summary Despite the fact that more than two decades have passed since Kronacher began his studies on cattle twins, no single test or series of tests yet exists through which it would be possible to distinguish between monozygotic and dizygotic cattle twins in an objective manner.
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Discordant abnormalities in monozygotic twins
The Journal of Pediatrics, 1965Congenital abnormalities are more often seen in monozygotic twins, especially with a monochorionic placenta, than in dizygotic twins. Although abnormalities are more frequently concordant in monozygotic than in dizygotic twins, discordance for the abnormalities among the former is strikingly frequent.
Peter Gruenwald +2 more
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Nongoitrous Cretinism in Monozygotic Twins
Archives of Pediatrics & Adolescent Medicine, 1969NONGOITROUS CRETINISM is presumed to be nongenetically determined, since it usually occurs as an isolated case within a family pedigree. Recent reports of concordance for this disorder among monozygotic twins 1,2 and familial instances 1,3-5 lend some support toward a genetic etiology.
James W. Bass, Alva L. Strickland
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Videokeratography of Keratoconus in Monozygotic Twins
Journal of Refractive Surgery, 1996ABSTRACT PURPOSE: To determine the corneal topographic appearance in a pair of monozygotic twins and family members of the twins because one of the twins had keratoconus and the other appeared normal by clinical examination. METHODS: Clinical examination and videokeratography (Topographic Modeling System, Tomey) of the patient, his ...
William W Ko +5 more
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Parkinson's disease in monozygotic twins
Annals of Neurology, 1986AbstractRecent studies of twins have demonstrated an unexpectedly low concordance of Parkinson's disease in monozygotic twins. Only two monozygotic twin pairs concordant for it have been reported. However, both pairs were atypical because of an early age at onset and other unusual features.
Joseph Jankovic, Avi Reches
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Birdshot retinochoroidopathy in monozygotic twins
Acta Ophthalmologica, 1992Abstract Birdshot retinochoroidopathy is a rare ocular disorder which was named and delineated as a separate clinical entity by Ryan & Maumenee in 1980. We diagnosed birdshot retinochoroidopathy in a monozygotic pair of twins, who were affected with a time interval of 12 years, respectively.
Marianne Fich, Thomas Rosenberg
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MONGOLISM IN MONOZYGOTIC TWINS
Archives of Pediatrics & Adolescent Medicine, 1933The appearance of mongolism in both twins is of relatively rare occurrence, and the literature contains only six previously recorded cases. In her excellent monograph on mongolism, Brousseau 1 reviewed the literature on mongolism in twins. Recently, Bauer 2 made a more detailed and extensive review in which he presented two additional cases and ...
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Childhood dermatomyositis in monozygotic twins
Neurology, 1986Identical twins who developed childhood dermatomyositis 2 weeks apart following upper respiratory infections are reported. Observations suggest that genetic influence on host susceptibility may play a role in childhood dermatomyositis and that a combination of host and environmental factors is most likely necessary to produce the disease.
Eldo W. Bergman +2 more
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Bullous Emphysema in Monozygotic Twins
American Review of Respiratory Disease, 1989Monozygotic twins who developed bullous emphysema are described. This occurrence suggests that there is a genetic component that predisposes to the development of this disorder.
Richard E. Kanner, Patricia Nelson
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MONOZYGOTIC AND DIZYGOTIC TWIN DIAGNOSIS
Annals of Human Genetics, 1955SummaryA method of estimating the probability of dizygotic and monozygotic twin pairs is described. Parent‐child and sib‐sib frequency tables for the ABO, MNS and Rhesus blood‐group systems and formulae for obtaining these tables for the P, Lutheran, Kell, Duffy, Kidd and non‐secretor (or Lewis) systems are given.Tables of the distribution of ...
L. S. Penrose, Sheila Maynard Smith
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