Results 171 to 180 of about 5,026 (197)
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Neuropathology and Applied Neurobiology, 1977
Cells with tetraploid nuclei have been examined in the striate cortex of patients with visual impairment and compared with age and sex matched controls. The number of these nuclei is reduced in those with visual impairment suggesting that tetraploidy is dependent upon an intact visual pathway and may be related to visual experience and memory.
C. L. SCHOLTZ, D. M. A. MANN
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Cells with tetraploid nuclei have been examined in the striate cortex of patients with visual impairment and compared with age and sex matched controls. The number of these nuclei is reduced in those with visual impairment suggesting that tetraploidy is dependent upon an intact visual pathway and may be related to visual experience and memory.
C. L. SCHOLTZ, D. M. A. MANN
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A liveborn infant with tetraploidy
American Journal of Medical Genetics, 1988AbstractWe report on an 22‐month‐old white girl with tetraploidy who is growing well, but who is extremely delayed in psychomotor development. When counseling parents it is important to realize that, although quite rare, tetraploid individuals can be born alive and live for at least 22 moths. The implications are also relevant to prenatal diagnosis.
C. Z. Lafer +3 more
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Leukemia & Lymphoma
Near-tetraploidy/tetraploidy (NT/T) is a cytogenetic alteration in acute myeloid leukemia (AML). In AML, specific chromosomal alterations are associated with clinical, morphological, and immunophenotypic features. The impact of cytogenetics on the prognosis of AML is well established.
Jacob, Fang +5 more
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Near-tetraploidy/tetraploidy (NT/T) is a cytogenetic alteration in acute myeloid leukemia (AML). In AML, specific chromosomal alterations are associated with clinical, morphological, and immunophenotypic features. The impact of cytogenetics on the prognosis of AML is well established.
Jacob, Fang +5 more
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Tetraploidy and the striate cortex
Pathology, 1977A tetraploid population of glial cell nuclei has been identified in layers one, two and three of the entire striate cortex. These have approximately twice the volume of diploid glial cell nuclei.
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Mosaic tetraploidy in a male neonate
Clinical Genetics, 1982Though complete and mosaic tetraploidy in zygotes almost always leads to abortion early in pregnancy, some cases have been described in which development was more successful. We report a male neonate with microcephaly and various other anomalies, in whom tetraploidy was found in 16% of peripheral lymphocytes.
H, Veenema, E W, Tasseron, J P, Geraedts
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Tetraploidy inProtopterus (Dipnoi)
Experientia, 1980Comparative DNA values obtained by Feulgen cytophotometry for 3 species ofProtopterus, as well as karyotype analysis, show the existence of a diploid-tetraploid relationship within the genusProtopterus.
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Nature, 1936
A COMMUNICATION1 from B. R. Speicher has directed attention to certain genetical data which do not seem to favour my suggestion2 that the pre-conjugation phenomena observed in the gametogenesis of the honey bee and of Cynips kollari may be interpreted in terms of derived tetraploidy.
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A COMMUNICATION1 from B. R. Speicher has directed attention to certain genetical data which do not seem to favour my suggestion2 that the pre-conjugation phenomena observed in the gametogenesis of the honey bee and of Cynips kollari may be interpreted in terms of derived tetraploidy.
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Development of tetraploidy in V79 spheroids
In Vitro, 1982Chinese hamster V-79-171 cells, when placed in suspension culture, spontaneously form multicell spheroids. As the spheroids enlarge the fraction of polyploid (predominantly tetraploid) cells increases and can approach 100% in very large spheroids. Spheroid size, rather than age, seems to be a major determinant for increased ploidy. When cell separation
P L, Olive, J C, Leonard, R E, Durand
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Colchicine-induced Tetraploidy in Luzula purpurea Link
Nature, 1950Luzula purpurea has been the subject of constant research in our laboratory since Malheiros and Castro1 observed the unusual behaviour of its chromosomes.
T M, SAMPAYO, D, CASTRO
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Experimental Tetraploidy in Newts 1
Development, 1958ABSTRACT A simple method has been devised for producing tetraploid newts by means of a ‘heat’ treatment. The eggs of T. palmatus (helveticus) and T. vulgaris were at different stages, varying from 3 hours to hours after artificial insemination, exposed to warm water of 34° –38°C. for a duration of 10–12 minutes.
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