منابع مشابه
Nature of Dividing Nuclei in Skeletal Muscle of Growing Rats
Much is known about the early stages of muscle development-the proliferation of myoblasts, their fusion into myotubes, and the transformation of myotubes into young muscle fibers . However, the mode of growth of muscle in the young animal remains obscure . It is known that muscle growth is extensive (e .g . in the chicken the pectoralis muscle enlarges from 0.7 g at hatching to 300 g in the adu...
متن کاملSpindle microtubules in the dividing nuclei of trypanosomes.
Stages in nuclear division have been identified in sections of bloodstream and cultured trypanosomes examined with the electron microscope In the sleeping sickness trypanosome Trypanosoma rhodesiense at division the nuclear envelope and nucleolus-like endosome persist and become stretched along an axis. An acentric spindle of microtubules encases the elongating endosome As division proceeds the...
متن کاملPoly(adenosine diphosphate ribose) synthetase activity in nuclei of dividing and of non-dividing but differentiating intestinal epithelial cells.
Poly(ADP-ribose) synthetase activity is found in nuclei of regenerating epithelial cells in the lower half of the crypts of guinea-pig small intestine. Nuclei from non-dividing but differentiating and maturing cells in the upper crypts and on the villi contain no more than about 10% of the synthetase activity of lower-crypt cell nuclei. The product in the active nuclei is shown to be 80% poly(A...
متن کاملContribution of Somatic and Dendritic SK Channels in the Firing Rate of Deep Cerebellar Nuclei: Implication in Cerebellar Ataxia
Introduction: Loss of inhibitory output from Purkinje cells leads to hyperexcitability of the Deep Cerebellar Nuclei (DCN), which results in cerebellar ataxia. Also, inhibition of small-conductancecalcium-activated potassium (SK) channel increases firing rate f DCN, which could cause cerebellar ataxia. Therefore, SK channel activators can be effective in reducing the symptoms of this disease, ...
متن کاملVisualization of actin filaments and monomers in somatic cell nuclei
In addition to its long-studied presence in the cytoplasm, actin is also found in the nuclei of eukaryotic cells. The function and form (monomer, filament, or noncanonical oligomer) of nuclear actin are hotly debated, and its localization and dynamics are largely unknown. To determine the distribution of nuclear actin in live somatic cells and evaluate its potential functions, we constructed an...
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ژورنال
عنوان ژورنال: Fungal Genetics Reports
سال: 1969
ISSN: 1941-4765
DOI: 10.4148/1941-4765.2032