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Página 1 a partir de 28 resultados
Negative 123-meta-iodobenzyl-guanidine imaging in Ewing's sarcoma of bone.
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The role of radiolabeled meta-iodobenzyl-guanidine (mIBG) is established in the detection and the staging of neuroblastoma. We designed a study of mIBG scanning for patients with Ewing's sarcoma, a tumor for which a neuroectodermic origin has been proposed. We explored 15 children with round cell
Tumor-associated antigens of rat moloney sarcoma cells. I. Cell-surface antigens.
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The dissociated cell surface membranes of a rat Moloney sarcoma (MST), derived from a BN rat, were extracted with 2 M KI, with 6 M guanidine thiocyanate, or by papain digestion. Extracts obtained with these three reagents were fractionated on columns of controlled-pore glass, 170 A pore size. A
Chromatographic separation and antigenic analysis of proteins of the oncornaviruses. II. Mammalian leukemia-sarcoma viruses.
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Proteins of leukemia and sarcoma viruses from the chicken, mouse, hamster, and cat were analyzed by gel filtration in guanidine hydrochloride. The mammalian viruses were found to contain six major proteins, whereas the avian viruses contained seven proteins. Proteins of viruses from different
Frequent amplifications and abundant expression of TRIO, NKD2, and IRX2 in soft tissue sarcomas.
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Copy number gains and high-level amplifications of the short arm of chromosome 5 are frequently observed in soft tissue sarcomas. To identify genes from this region possibly involved in tumor progression, we analyzed 34 soft tissue sarcomas (10 pleomorphic and 8 dedifferentiated liposarcomas, 6
Purification and properties of adenylosuccinate synthetase from Yoshida sarcoma ascites tumor cells.
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Adenylosuccinate synthetase (IMP:L-aspartate ligase (GDP-forming), EC 6.3.4.4) was purified about 750-fold to a homogeneous state from Yoshida sarcoma ascites tumor cells. A yield of 38% purified enzyme was achieved by a procedure including affinity chromatography on hadacidin-Sepharose 4B.
Properties and functions of a nucleolus-specific phosphoprotein of mouse ascites sarcoma cells.
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A 110K-dalton phosphoprotein previously was isolated from the nucleoli of mouse ascites sarcoma cells. The localization of this phosphoprotein in the nucleoli was confirmed by an indirect immunofluorescence assay with rabbit antisera to the phosphoprotein. This phosphoprotein formed a complex of
[Cytological and immunological aspects of the antitumor action of polyhexamethylene guanidine in BALB/c mice].
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Repeated intraperitoneal and intratumor administration of polyhexamethylene guanidine (PMG) in 3 and 5 mg/kg doses to sarcoma 180 bearing mice caused a significant reduction in tumour mass accompanied by increased incidence of diploid and hypodiploid cells. PMG brings about an increase in the number
Phosphorylation and nucleic acid binding properties of m1 Moloney murine sarcoma virus-specific pP60gag.
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The pP60gag polyprotein of the feline leukemia virus pseudotype of m1 Moloney murine sarcoma virus [m1MSV(FeLV)] was previously shown to be MSV specific and to contain murine p30 and smaller structural polypeptides. This protein was detected in m1MSV-transformed cells, and in pulse-chase studies it
Chromatographic and electrophoretic analysis of viral proteins from hamster and chicken cells transformed by Rous sarcoma virus.
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Several methods have been explored for the detection and characterization of viral proteins from soluble extracts of cells transformed by Rous sarcoma virus (RSV). Viral antigens have been analyzed after gel filtration in several solvents. In addition, immune complexes formed with virus-specific
Chromatographic separation and antigenic analysis of proteins of the oncornaviruses. I. Avian leukemia-sarcoma viruses.
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Gel filtration of avian tumor virus proteins in 6 m guanidine hydrochloride clearly resolved seven major protein species. The antigenic activity of these proteins was recovered in good yield after removal of the denaturing solvent, permitting a correlation of specific polypeptides with the principal
Structure and interactions of heparan sulfate proteoglycans from a mouse tumor basement membrane.
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Various forms of heparan sulfate proteoglycan were solubilized from the mouse Engelbreth-Holm-Swarm (EHS) sarcoma by extraction with 0.5 M NaCl, collagenase digestion and extraction with 4 M guanidine. They could be separated into high (greater than or equal to 1.65 g/ml) and low (1.38 g/ml) buoyant
Characteristics and in vivo occurrence of type VIII collagen.
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Type VIII collagen was isolated from bovine Descemet's membranes by pepsin treatment and salt fractionation, as described by Kapoor et al. [(1986) Biochemistry 25, 3930-3937]. Contaminating type IV collagen was removed by ion-exchange chromatography. Purified type VIII collagen consisted of two
Group-specific antigen shared by the members of the reticuloendotheliosis virus complex.
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The polypeptides of reticuloendotheliosis virus (REV) were separated by gel filtration in the presence of guanidine hydrochloride. The eight peaks obtained by gel filtration were then analyzed by polyacrylamide gel electrophoresis and four appeared to contain single polypeptides. The material
Specificity of serum from rodents immune to Moloney C-type virus-induced tumours.
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When cells are infected by C-type viruses such as Moloney sarcoma/leukaemia virus, new antigens appear on the cell membrane. Mice and rats will respond immunologically to the antigen(s). It was uncertain whether the antigens were related to the viral structural proteins or to non-virion,
A Collagen-Binding S-Layer Protein in Lactobacillus crispatus.
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Two S-layer-expressing strains, Lactobacillus crispatus JCM 5810 and Lactobacillus acidophilus JCM 1132, were assessed for adherence to proteins of the mammalian extracellular matrix. L. crispatus JCM 5810 adhered efficiently to immobilized type IV and I collagens, laminin, and, with a lower
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