(n.) A coming or happening; as, the occurence of a railway collision.
(n.) Any incident or event; esp., one which happens without being designed or expected; as, an unusual occurrence, or the ordinary occurrences of life.
Example Sentences:
(1) By presenting the case history of a man who successively developed facial and trigeminal neural dysfunction after Mohs chemosurgery of a PCSCC, this paper documents histologically the occurrence of such neural invasion, and illustrates the utility of gadolinium-enhanced magnetic resonance scanning in patient management.
(2) Hypothyroidism complicated by spontaneous hyperthyroidism is an interesting but rare occurrence in the spectrum of autoimmune thyroid disorders.
(3) We therefore enumerated the percentage of Leu2a+ cells as well as the occurrence of HLA-DR activation markers within this population.
(4) Several interpretations of the results are examined including the possibility that the effects of Valium use were short-lived rather than long-term and that Valium may have been taken in anticipation of anxiety rather than after its occurrence.
(5) In addition to the phase diagrams reported here for these two binary mixtures, a brief theoretical discussion is given of other possible phase diagrams that may be appropriate to other lipid mixtures with particular consideration given to the problem of crystalline phases of different structures and the possible occurrence of second-order phase transitions in these mixtures.
(6) The authors followed up the occurrence of inflammation-mediated osteopenia (IMO) in young and adult rats weighing 50 g and 150 g, respectively.
(7) The methodology, in algorithm form, should assist health planners in developing objectives and actions related to the occurrence of selected health status indicators and should be amenable to health care interventions.
(8) The occurrence of episodes of desaturation during sleep in patients suffering from chronic airflow obstruction is well known.
(9) A striking feature of BEN is the familial occurrence of the disease.
(10) On the basis of mathematical models of the obtained dose-time-effect relationship, the risk of cancer occurrence due to small carcinogen doses is predicted.
(11) In this study, bacterial flora, especially the occurrence of A. actinomycetemcomitans, in the periodontal pockets of one juvenile with gingivitis (G), one JP patients, five rapidly progressive periodontitis (RP) patients and one adult periodontitis(AP) patient, and one adult with healthy periodontium was investigated using a blood agar medium and a selective medium for A. actinomycetemcomitans.
(12) By using these methods, it was clearly indicated that these factors such as TDF of rectum, Z-coordinate of weighted geometric center (WGC-Z), the dose of whole pelvic irradiation, history of chemotherapy and Treponema pallidum hemoagglutination test (TPHA) were important for occurrence of rectal complication.
(13) This study examined the frequency of occurrence of velar deviations in spontaneous single-word utterances over a 6-month period for 40 children who ranged in age from 1:11 (years:months) to 3:1 at the first observation.
(14) So we concluded that duplications and accessories should be thought to have similar meanings with the ordinary branching patterns of MCA in the occurrence of aneurysms.
(15) In a Caucasian woman with a history of ocular and pulmonary sarcoidosis, the occurrence of sclerosing peritonitis with exudative ascites but without any of the well-known causes of this syndrome prompts us to consider that sclerosing peritonitis is a manifestation of sarcoidosis.
(16) However, this inhibition was not found in rats treated with castor oil for 3 d. Moreover, 5-HT concentration in the midbrain significantly decreased in rats that acquired the adaptability for the occurrence of diarrhea.
(17) The timing of the occurrence of the disease is closely related to the conceptional age of the infant rather than weeks post birth, birth weight, gestational age at birth.
(18) Vital staining of neuroblastoma cells with acridine orange produces a bright intracellular red-orange fluorescence most probably due to the occurrence of RNA.
(19) The presence of potential insect vectors and the occurrence of clinical signs are indications of active transmissions.
(20) They do suggest the presence of a relatively small subpopulation in whom reduction of plasma cholesterol may lead to increased occurrence of cancer.
Pleomorphism
Definition:
(n.) The property of crystallizing under two or more distinct fundamental forms, including dimorphism and trimorphism.
(n.) The theory that the various genera of bacteria are phases or variations of growth of a number of Protean species, each of which may exhibit, according to undetermined conditions, all or some of the forms characteristic of the different genera and species.
Example Sentences:
(1) The mutant spores are pleomorphic and differ both in shape and size from the wild-type spores.
(2) The revised diagnosis was pleomorphic rhabdomyosarcoma for one case and pleomorphic leiomyosarcoma for the other cases.
(3) GABA-immunogold reaction has revealed the presence of this inhibitory transmitter in most axon terminals containing ovoid-pleomorphic vesicles within the molecular layer, including those resembling climbing fiber-terminals.
(4) Pleomorphic glioma cells but especially astrocytoma cells reacted positively also for the GFA protein.
(5) These findings suggest that the presence of features such as large prominent nucleoli, tumor growth in sheets, individual-cell necrosis, and nuclear pleomorphism may be used to predict recurrence of subtotally resected meningiomas that would not be classified as malignant by traditional criteria.
(6) Bouton-like terminals were found to be of two types according to their vesicle content, namely, boutons with ovoid, clear synaptic vesicles forming Gray type-1 synapses and boutons with pleomorphic clear synaptic vesicles forming Gray type-2 synapses.
(7) Malignant fibrous histiocytoma is a pleomorphic soft tissues sarcoma usually found in the extremity and in the retroperitoneum.
(8) Specifically discussed are mixed tumor, monomorphic adenoma, carcinoma ex-pleomorphic adenoma, clear-cell tumor, sebaceous lymphadenoma, and sebaceous carcinoma.
(9) Irradiation may have been responsible for inducing a true malignant mixed tumour as distinct from the more common malignancy which may arise in pleomorphic adenoma, this being a simple carcinoma.
(10) Electron microscopy of two cases of anaplastic giant cell tumor of the thyroid revealed that these neoplasms consisted of pleomorphic cells with large, bizarre-shaped nuclei and relatively little cytoplasm rich in rough endoplasmic reticulum.
(11) Malignant fibrous histiocytomas of the storiform pleomorphic type were found in the lower legs of two patients, 79 and 42 years of age.
(12) Thirty-two cases of soft tissue malignant fibrous histiocytoma (MFH), including 24 of common storiform-pleomorphic type, 7 of myxoid type, and 1 of inflammatory type, were analyzed in an ultrastructural quantitative study, the objective being to clarify the cellular composition and distribution of the tumor.
(13) All types of hyperplasia were frequently seen in areas adjacent to carcinomas, including ductal, pleomorphic, mucinous, adenosquamous, small and spindle cell and cystadenocarcinomas.
(14) Stereoscopic observations clearly showed that the bacteria were pleomorphic, rod-shaped, arranged in a row or at an angle, and frequently showed septal formation.
(15) The aortic tumour consisted of pleomorphic spindle-shaped and giant cells.
(16) Poorly-differentiated tissue produced a more haphazard out-growth of pleomorphic cells with few processes and flattened pseudopodia.
(17) We identified five histopathological categories in 66 patients: one with an excellent prognosis (large, cleaved cell, six of eight patients surviving for two years); two with an intermediate prognosis (large, noncleaved and mixed follicular-center cell, nine of 18 and eight of 17, respectively, surviving for two years); and two with a poor prognosis (blastic and pleomorphic pyroninophilic, one of 10 and two of 13, respectively, surviving for two years).
(18) Despite the pleomorphism and the variation of cell components, it is suggested that the stellate, intermediate and physaliferous cells, constitute the same cell at different stages of maturation.
(19) We present a case of pleomorphic adenoma of the soft palate parapharyngeal, which is removed using transoral approach with the addition of lateral cervicotomy to control of the great vessels.
(20) These tumors included seven meningiomas, one hemangiopericytoma, three meningeal sarcomas (1 pleomorphic-cell type and 2 myxofibrosarcomas), two fibrous histiocytomas, and four malignant melanomas.