(1) The radial layer in the cytoplasm was found to have crystalline structures and polymembrane bodies, numerous nuclei with light karyoplasm and distinct nucleoli.
(2) Chromosomal structures were seen in two different stages: large dense plaques (condensed stage), and as small dense granules of 300-400 A diameter, arranged spherically within the karyoplasm (extended stage).
(3) From G1 through mitosis, the amount of Ki-67 antigen increases steadily: location of the antigen is nucleolar during G1 and both nucleolar and karyoplasmic during G2.
(4) In the S-phase, Ki-67 staining was found homogeneously in the karyoplasm and in the perinucleolar region.
(5) In cells undergoing DNA repair, the zone of DNA became discontinuous and DNA was scattered throughout the entire karyoplasm as small aggregates and fine filaments.
(6) At the ultrastructural level, these karyoplasmic formations consist of haphazardly distributed patches of an essentially amorphous material of various density.
(7) It is suggested that vesicular structures may form as the result of disturbances in the water-electrolyte exchange between cytoplasm and karyoplasm of adrenal cells.
(8) Beside the quantification of classical features of retrograde reaction (chromatolysis; nuclear eccentricity; increased basophilia; perikaryal, nuclear and nucleolar swelling), several reactive changes so far not recognized (karyoplasmic basophilia and granulation) were detected.
(9) The karyoplasm (the contents of germinal vesicle) of the Bufo viridis, Xenopus laevis, and Acipenser stellatus oocytes maturing under the influence of progesterone acquires the ability to induce the maturation (germinal vesicle breakdown) of the full grown oocytes, when injected into them.
(10) Heparin causes increase of cells observable by phase-contrast method, and homogenization of the karyoplasm.
(11) At later times (24-72 h), the increase in the nuclei volume is associated with the changes in the karyoplasm structure.
(12) G2-phase cells contained a finely granular Ki-67 staining in the karyoplasm with Ki-67-positive specks and perinucleolar staining.
(13) In line with these lesions, earlier cardiomyocytic changes were found, such as margination of nuclear chromatin, clarification of karyoplasm, interfibrillar edema of sarcoplasm with subsequent loosening and aggregation of myofibrils.
(14) Chromosomal structres were seen in two different stages: large dense plaques (condensed stage), and as small dense granules of 300-400 a diameter, arranged sperically within the karyoplasm ( extended stage).
(15) As these paracrystals are either membrane coated or lie free in the karyoplasm, and as in the perinuclear cytoplasm, membrane coated paracrystals can be demonstrated as well, it is assumed that the cytoplasmic tubulin which is composing the intranuclear division spindle can transverse the intact nuclear envelope via vesicle transport.
(16) Interaction of d1-norepinephrine with karyoplasm protein is 7 times weaker than that of 1-isomer.
(17) A dose as high as 1000 Gy causes severe changes in the karyoplasm leading to nucleus swelling.
(18) We conclude that the term "nuclear rotation" refers to rotation of the entire nucleus in the cytoplasm of interphase cells, and that nuclear rotation is not an expression of karyoplasmic streaming.
(19) It was found to consist of seven sets of tubules, each containing three rows of coiled tubules which are wound in one-and-a-half turns from the site of origin at the nuclear membrane to the karyoplasmic pole.
(20) Some of the nuclei show deep invaginations into the karyoplasm.
Nucleoplasm
Definition:
(n.) The matter composing the nucleus of a cell; the protoplasm of the nucleus; karyoplasma.
Example Sentences:
(1) Depending on the differential sensitivity of nuclear T-ag to extraction by salt and detergent, nuclear T-ag could be separated into nucleoplasmic T-ag, salt-sensitive T-ag and matrix-bound T-ag subclasses.
(2) Hepatocellular thyroid status was estimated from the relative abundances of two nucleoplasmic proteins on polyacrylamide gel electrophoregrams.
(3) The two characteristic forms of eucaryotic DNA-dependent RNA polymerases, polymerase I (nucleolar) and polymerase II (nucleoplasmic), were identified.
(4) The affinity labeling was intensified when resealed vesicles were made leaky by freezing or ultrasonication, suggesting that the poly(A) binding proteins are accessible from the nucleoplasmic but not the cytoplasmic face of the envelope.
(5) Turnover rates of the components of systems for RNA synthesis of rat-liver nucleus, nucleolus, and nucleoplasm were investigated.
(6) These studies support the conclusion that there are no clear differences between many nucleoplasmic and chromatin-bound nonhistone proteins.
(7) Most spheres are free in the nucleoplasm, but a few are attached to chromosomes at specific chromosome loci, the sphere organizers (SOs).
(8) Experiments involving fractionation of cell lysates and indirect immunofluorescence microscopy of control and interferon-treated cells revealed that the 204 protein is nucleolar and nucleoplasmic.
(9) The genes for U1 and U2 snRNAs (small nuclear RNAs) are clustered and present in the nucleoplasmic DNA; however, the localization of U3 snRNA genes is not known.
(10) Changes in the characteristics of the nucleoplasm were examined in young hamster facial motoneurons of 15 and 20 days postnatal age and in the adult (100 days postnatal age) at both the light and electron microscope levels.
(11) Small nucleolus-related bodies which occur in the nucleoplasm of "micronuclei" lacking nucleolar organizers have been studied by immunofluorescence microscopy.
(12) This initial displacement of nuclear material to the cell border may indicate an association between the nucleoplasm and the plasma membrane.
(13) The protein compositions of hnRNP particles found in the nucleoplasm fraction and in the chromatin-nucleolar fraction are very similar.
(14) Absorbance profiles and radioactivity patterns of nucleoplasmic RNA were similar in the two groups of rats.
(15) Fluorescence microscopy further indicated that in both nuclear preparations, the neoglycoprotein binding sites were associated with the nucleoli as well as with nucleoplasmic ribonucleoprotein elements.
(16) After 24 h of cultivation a dramatic increase in RNA synthesis is observed; it is the highest in the heterogeneous nucleoplasmic RNA fraction.
(17) Antibody raised against the 43K antigen reacted with the stichosome and cuticle of the mature larva and the cytoplasm and nucleoplasm, but not nucleolus, of all nuclei of infected host cells (Nurse cells) in sections of infected tissues.
(18) In vitro experiments have shown that p24 is localized within the nucleolus, while p27 expression is probably confined to the nucleoplasm.
(19) Type III was characterized mainly by homogenization of the nucleoplasm and cytoplasm and dilation of the perinuclear cisternae and endoplasmic reticulum, thus showing features of 'non-lysosomal vesiculate' cell death.
(20) In addition to the fraction of Ran protein complexed to RCC1, a 25-fold molar excess of the protein over RCC1 was found in the nucleoplasm of HeLa cells.