(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.
Polymorphism
Definition:
(n.) Same as Pleomorphism.
(n.) The capability of assuming different forms; the capability of widely varying in form.
(n.) Existence in many forms; the coexistence, in the same locality, of two or more distinct forms independent of sex, not connected by intermediate gradations, but produced from common parents.
Example Sentences:
(1) Structural peculiarities in tubulin polymorphism are considered.
(2) We conclude that only one of the alleles was amplified and that either allele could be amplified with respect to both the SphI and PvuII polymorphisms.
(3) Twelve families with Wiskott-Aldrich syndrome (WAS) were studied by linkage analysis using 10 polymorphic marker loci from the X-chromosome pericentromeric region.
(4) Restriction fragment length polymorphisms (RFLPs) were studied in a large Algerian family which includes 6 haemophiliacs and a previously described case of female haemophilia A.
(5) 247 individuals from Northern Italy have been tested for red cell glutamic-pyruvic transaminase (GPT) polymorphism.
(6) An N-acetylation polymorphism is described that is expressed toward arylamine carcinogens in tumor target organs of an inbred rat model.
(7) These killer cells could lyse a wide range of syngeneic and allogeneic lymphoid tumour cell lines in vitro, and it was found that cell suspensions from nude mice were always significantly more active than those from normal mice, and that the most active effector population was a polymorph-enriched peritoneal-exudate cell suspension.
(8) Analysis of Alu repeat polymorphism should be useful in construction of a high-resolution map and also in identifying genotypes of individuals for clinical and other purposes because the repeats are ubiquitous and the technique for their detection is simple.
(9) Structurally altered polymorphic variants with reduced activity, such as tetrameric interface mutant Ile-58 to Thr, may produce not only an early selective advantage, through enhanced cytotoxicity of tumor necrosis factor for virus-infected cells, but also detrimental effects from increased mitochondrial oxidative damage, contributing to degenerative conditions, including diabetes, aging, and Parkinson's and Alzheimer's diseases.
(10) Subcutaneous polymorphic sarcomas were induced in 8 out 27 offspring of syrian golden Hamsters after treatment of pregnant mother animals at day 15 of gestation with Adenovirus 12.
(11) Because all differences were found only in this region of the molecule, and because DR alpha-chains seem to be relatively non-polymorphic, these positions in the DR beta-chain must have a major role in influencing T-cell recognition of the DR molecule.
(12) The dense polymorphous bodies of the B pinealocytes are ultrastructurally identified as lysosomes.
(13) Multiple polymorphisms on the DQ molecule(s) have been detected by monoclonal antibodies (MoAbs).
(14) The PvuII-CIII and PvuII-AIV polymorphisms were both associated with differences in apo AI levels, explaining 3.7%-5.7% of the sample variance.
(15) Affinity constants, binding kinetics and serum concentrations of hSHBG from individuals having a 4-band pattern were similar to those obtained in individuals with a 2-band pattern, thus suggesting that the mechanism responsible for the generation of polymorphic variants of hSHBG reported herein did not involve the steroid binding site of the molecule.
(16) Polymorphism of PGM1 and PGM3 types was investigated in placental extracts from 127 unrelated Japanese parturients living in Yamanashi Prefecture.
(17) Genomic, cDNA, and cosmid probes have been used to isolate homologous cosmids from human chromosomes 7, 10, 16, 17 and X as part of a search for polymorphic nucleotide sequences.
(18) A family with occurrence of juvenile sudden death and effort polymorphous ventricular tachycardias is reported.
(19) As an extension to the variety of existing techniques using polymorphic DNA markers, the Random Amplified Polymorphic DNA (RAPD) technique may be used in molecular ecology to determine taxonomic identity, assess kinship relationships, analyse mixed genome samples, and create specific probes.
(20) We report that specific human (dC-dA)n.(dG-dT)n blocks are polymorphic in length among individuals and therefore represent a vast new pool of potential genetic markers.