What's the difference between nucleole and nucleolus?
Nucleole
Definition:
(n.) The nucleus within a nucleus; nucleolus.
Example Sentences:
(1) Morphologically, all cases showed a mixture of small lymphocytes and larger nucleolated 'prolymphocytes' although the degree of prolymphocytoid change was unrelated to immunological patterns.
(2) A cytologic comparison showed that in MBCL areas there were more large transformed (prominent nucleolated) MBCs (P = .003), a higher mitotic rate (P = .03), and more nuclear irregularities (P = .007) than were present in the reactive group.
(3) Certain analogy in the cytochemical behaviour between the nucleolous and the chromatin under various conditions of hydrolysis leads to the suggestion that the nucleolar basic proteins demonstrated should be in the form of a ribonucleoprotein complex, probably of the pre-ribosomal material of the nucleolus.
(4) glia, endothelial cells) as well as tangential, non-nucleolated sections through neuronal perikarya recognized and excluded from further analysis without requiring interactive procedures.
(5) All lesions were composed of partially necrotic, nested, or sheet-like arrays of mitotically active, nucleolated large cells that were at least twice the size of those seen in small cell carcinomas.
(6) Analysis of electronic pictures shows an aberrant structure of the nucleus, a very dense nuclear membrane and fragmented nucleoles.
(7) Other specific enzyme localizations included the mitochondria matrices, nucleoles, condensed nuclear chromatin, periaxolemmal spaces in nerve bundles and sometimes the cleft of neuro-glandular junctions.
(8) Within the period between 12 and 24 h after the mercury bichloride injection, intracellular reparative processes are observed, in addition to destruction, in partially damaged but viable nephrocytes, which is confirmed by the enlargement of the nucleolic size.
(9) They are different from the usual viral type particles connected with Australia antigen and appear to be formed of dense, granulofilamentous accumulations, scattered at random in the nucleus, sometimes in close proximity of nucleoles and nuclear bodies.
(10) Since the blastic crisis in chronic myeloid leukaemia is characterized by the appearance of an increased number of immature, highly nucleolated cells, these findings lend support to the hypothesis that the duplication of the Ph1 represents a feature possibly favoured by the pathological persistence of nucleolar RNA-rich structures in the metaphase.
(11) By means of toluidine blue staining, until now being used for the verification of nucleoli and their different shapes only in experimentations on animals, a good correlation of the nucleole analysis in the peripheral blood picture and in the lymph node biopsies with the clinical progress of the disease has been observed.
(12) A 'decision tree' classification based on the percentage of nucleolated nuclei, percentage of nuclei with two or more nucleoli and mean major nuclear diameter was adopted.
(13) Considerable differences are to be found between the micromyeloblastoid and lymphoblastoid paramyeloblasts as regards the size of the nucleolar "apparatus", both in the absolute average values and in the index showing the ratio of the nucleolous of the remaining nuclear surface (4.76% for myeloblastoid and 9.96% for lymphoblastoid paramyeloblasts).
(14) Among all the quantitative features, the most evident changes in the nucleolar size were expressed by the nucleolar hypertrophy index after including in the calculation only those nucleoli with a diameter larger than 3 arbitrary units, whereas the percentage of nucleolated nuclei and the proportion of nuclei with two and three nucleoli best represented the modifications to the frequency.
(15) The performance of the profile recognition procedure was evaluated using 426 nucleolated and non-nucleolated profiles of different types of neurons in the primary visual cortex of the rat.
(16) Based on the well-known correlations between the nucleolus organization and the association pattern, the results seem to indicate a compensation mechanism among the nucleoles organizing regions (NOR's) which keeps the supply of nucleolar material constant and simultaneously causes a higher association tendency between the remaining acrocentric chromosomes.
(17) Nucleolated profiles were recognized as such with a 91% accuracy, non-nucleolated profiles were rejected correctly in 90% of cases.
(18) The nucleolated nucleus is surrounded by dictyosomes containing small vesicles, which contribute to form reserve material.
(19) The overlap index showed that the percentages of marginated nucleoli and nucleolated nuclei are the two best discriminatory features between adenoma and carcinoma.
(20) Moderate leucopenia with lymphocytosis was present, with frequent hairy cells carrying one prominent nucleole.
Nucleolus
Definition:
(n.) A little nucleus.
(n.) A small rounded body contained in the nucleus of a cell or a protozoan.
Example Sentences:
(1) Aside from these characteristic findings of HCC, it was important to reveal the following features for the diagnosis of well differentiated type of small HCC: variable thickening or distortion of trabecular structure in association with nuclear crowding, acinar formation, selective cytoplasmic accumulation of Mallory bodies, nuclear abnormalities consisting of thickening of nucleolus, hepatic cords in close contact with bile ducts or blood vessels, and hepatocytes growing in a fibrous environment.
(2) Concurrently, stereology was applied to quantitate: (1) the density of RNA labelling, and (2) changes in the size of the nucleus and nucleolus in response to estrogen treatment.
(3) Interestingly, actinomycin D treatment dissociated centromeres from localization within the segregated nucleolus.
(4) In the hybrid cells the human nucleolus organizer regions are active, as shown by Ag-AS staining and involvement in "satellite association."
(5) From these findings it can be concluded that the transcription of ribosomal DNA takes place in the dense fibrillar component of the nucleolus.
(6) The existence of two nerve-cell types has been proved: clear ones-big, eggshape with nucleus and an obvious nucleolus; and darker ones-smaller, fusiforms, with nucleus and a less perceptible nucleolus.
(7) Immunoelectron microscopy revealed that in spermatogonia, leptotene and pachtyene spermatocytes, and in Golgi phase spermatids, B23 and nucleolin were localized in the dense fibrillar component and granular component of the nucleolus but not in the fibrillar centers.
(8) In Drosophila melanogaster males, X-Y meiotic chromosome pairing is mediated by the nucleolus organizers (NOs) which are located in the X heterochromatin (Xh) and near the Y centromere.
(9) Peripheral blood specimen showed abnormal lymphoid cells with an oval to cleaved nucleus, rather condensed chromatin, occasional prominent nucleolus, and basophilic cytoplasms with vacuoles which seems to be a T-cell counterpart of B-cell chronic lymphocytic leukemia with mixed cell types.
(10) Late in infection, an additional marked accumulation occurred in both fibrillar and granular components of the nucleolus.
(11) However, no definite nucleolus has been demonstrated in the endozoite nucleus.
(12) It occurs within an intact nuclear membrane and is characterized by the persistence of the nucleolus and its transformation into 2 polar masses.
(13) The nucleolus, initially clustered at the nucleus centre, undergoes dispersion and assembles again towards the end of embryonic development.
(14) The photodamage was limited to the nucleus and nucleolus.
(15) Turnover rates of the components of systems for RNA synthesis of rat-liver nucleus, nucleolus, and nucleoplasm were investigated.
(16) The blocking of IP by cordycepin and the lack of inhibition at the nucleolus level under the same conditions, show that the two early effects of the action of estrogen on the immature rat uterus are not directly correlated.
(17) The basally-located nucleus is irregularly shaped with fine granular euchromatin and some peripheral heterochromatin: satellite karyosomes border the nucleolus.
(18) By using this method, we were able to measure the area, length, and width of the cell, the area of the nucleus and nucleolus, and the position of the nucleus (i.e., eccentricity).
(19) The identified pre-rRNA components (45 S, 41 S, 39 S, 36 S, 32 S and 21 S) are confined to the nucleolus and constitute about 70% of its rRNA.
(20) At 0 h, there is a single large fibrillar center in each nucleolus which splits into smaller and more numerous FCs until the number of FCs reaches five, the number of nucleolus organizers in normal haploid human cells.