Results 181 to 190 of about 12,566 (212)

Lateral asymmetry in human constitutive heterochromatin

Chromosoma, 1975
Human lymphocytes were grown for one replication cycle in BrdU, stained with 33258 Hoechst, exposed to UV light and subsequently treated with 2 x SSC and stained with Giemsa. This technique differentially stains the constitutive heterochromatin of chromosomes 1, 9, 15, 16, and the Y. In the heterochromatin of chromosome 9 both sister chromatids stained
R R, Angell, P A, Jacobs
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Characterization of human chromosomal constitutive heterochromatin

Canadian Journal of Genetics and Cytology, 1986
The constitutive heterochromatin of human chromosomes is evaluated by various selective staining techniques, i.e., CBG, G-11, distamycin A plus 4,6-diamidino-2-phenylindole-2-HCl (DA/DAPI), the fluorochrome D287/170, and Giemsa staining following the treatments with restriction endonucleases AluI and HaeIII.
A, Babu, R S, Verma
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Distribution of constitutive heterochromatin in mammalian chromosomes

Chromosoma, 1971
Using a special staining technique, a survey of the chromosomes of many mammalian species showed that constitutive heterochromatin is present in all cases and that the heterochromatin pattern appears to be specific and consistent or each chromosome and each taxon.
T C, Hsu, F E, Arrighi
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Constitutive heterochromatin polymorphisms in patients with malignant diseases

Cancer, 1981
The frequency of constitutive heterochromatin heteromorphisms was assessed in peripheral blood cultures of 23 patients with various malignant diseases and in their respective controls, formed by cancer-free same sex siblings of the propositi. The results showed no significant differences between the cancer and the control groups, except for chromosome ...
L, Aguilar, R, Lisker, L, Ruz, O, Mutchinick   +3 more
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CONSTITUTIVE HETEROCHROMATIN IN MOUSE CHROMOSOMES TREATED WITH TRYPSIN

Canadian Journal of Genetics and Cytology, 1973
Chromosome preparations from three sublines of mouse L-cells (A9, B82 L60) were made by conventional air-drying methods and the slides treated both by trypsin digestion and the C-banding methods, in order to investigate and compare the distribution of constitutive heterochromatin in these cells.
M, Ray, J L, Hamerton
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Constitutive heterochromatin in early embryogenesis of Drosophila melanogaster

Molecular and General Genetics MGG, 1991
The formation of constitutive heterochromatin was studied during the embryonic development of Drosophila melanogaster, using the C-banding technique. During embryonic cleavage, C-banded material is not seen in mitotic chromosomes; the differentiation between euchromatin and heterochromatin only occurs at blastoderm.
I E, Vlassova, A S, Graphodatsky, E S, Belyaeva, I F, Zhimulev   +3 more
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DNase I sensitivity in facultative and constitutive heterochromatin

Chromosoma, 1985
In situ nick translation allows the detection of DNase I sensitive and insensitive regions in fixed mammalian mitotic chromosomes. We have determined the difference in DNase I sensitivity between the active and inactive X chromosomes in Microtus agrestis (rodent) cells, along both their euchromatic and constitutive heterochromatic regions. In addition,
K, Sperling, B S, Kerem, R, Goitein, V, Kottusch, H, Cedar, M, Marcus   +5 more
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A developmental study of constitutive heterochromatin in Microtus agrestis

Chromosoma, 1971
In the vole, Microtus agrestis, the constitutive heterochromatin is largely restricted to the giant sex chromosomes but varies in its degree of condensation in various cell types. In the cleavage embryos and fibroblasts it formed one or two long and extended heterochromatic fibers, in hepatocytes it formed two large and diffuse masses and in neurons ...
J C, Lee, J J, Yunis
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Satellite DNA in Constitutive Heterochromatin of the Guinea Pig

Science, 1970
Total DNA and DNA from the heterochromatin and euchromatin fractions of male guinea pig liver nuclei were analyzed by cesium sulfate-silver density-gradient centrifugation. Total DNA is composed of three components: a heavy satellite DNA, a main DNA of intermediate density, and a light satellite DNA.
J J, Yunis, W G, Yasmineh
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5-Methylcytosine localised in mammalian constitutive heterochromatin

Nature, 1974
DEOXY-5-METHYLCYTIDYLIC acid (5-MeC) is an almost universal, although minor component of DNA in plants and animals. It makes up 4–7% of the bases in plants1, no more than 1.5% of the bases in the mouse2 and even less in the human3. 5-MeC itself is not incorporated directly into DNA.
Miller, O J, Schneidl, W, Allen, J, Erlanger, B F   +3 more
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