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  • 1
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: The degree of matching of HLA genes between the selected donor and recipient is an important aspect of the selection of unrelated donors for allogeneic bone marrow transplantation (UBMT). The most sensitive methods currently used are serological typing of HLA class I genes, mixed lymphocyte culture (MLC), IEF and molecular genotyping of HLA class II genes by direct sequencing of PCR products. Serological typing of class I antigenes (A, B and C) fails to detect minor differences demonstrated by direct sequencing of DNA polymorphic regions. Molecular genotyping of HLA class I genes by DNA analysis is costly and work-intensive. To improve compatibility between donor and recipient, we have set up a new rapid and non-radioisotopic application of the ‘fingerprinting PCR’ technique for the analysis of the polymorphic second exon of the HLA class I A, B and C genes. This technique is based on the formation of specific patterns (PCR fingerprints) of homoduplexes and heterodu-plexes between heterologous amplified DNA sequences. After an electrophoretic run on non-denaturing polyacrylamide gel, different HLA class I types give allele-specific banding patterns. HLA class I matching is performed, after the gel has been soaked in ethidium bromide or silver-stained, by visual comparison of patients’ fingerprints with those of donors. Identity can be confirmed by mixing donor and recipient DNAs in an amplification cross-match. To assess the technique, 10 normal samples, 22 related allogeneic bone marrow transplanted pairs and 10 unrelated HLA-A and HLA-B serologically matched patient-donor pairs were analysed for HLA class I polymorphic regions. In all the related pairs and in 1/10 unrelated pairs, matched donor-recipient patterns were identified. This new application of PCR fingerprinting may confirm the HLA class I serological selection of unrelated marrow donors.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 66 (1995), S. 2232-2234 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Regarding x-ray mirror design and fabrication, the unique properties of the ESRF source push specifications far beyond the obtainable limits of current technology. In order to keep control of the high quality of optical beamline components, interferometric based metrology capabilities are mandatory. This paper describes the ESRF metrology facility in which four complementary systems permit complete analysis of the quality of x-ray optical components. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1572-8927
    Keywords: Electrolyte conductance ; single-ion conductance ; ion-pair formation ; ethanol-water ; acetonitrile-water ; isodielectric mixtures
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Precise conductance measurements of solutions of lithium, sodium and potassium nitrates were made at 25°C in acetonitrile-water and ethanol-water isodielectric mixtures, containing up to 15 mole percent organic-solvent, and the data analyzed by the 1978–80 Fuoss conductance equations. Single ion conductances were determined with the help of transference numbers in the case of ethanol-water mixtures. Ion-pair association constants are discussed in terms of contact and solvent-separated ion-pairs and were found to be almost equal to those for the halides. The anion appears more sensitive than the cations to the solvent structure in mixtures rich in water.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1569-8041
    Keywords: anaplastic large cell lymphoma ; classification ; clinics ; histology ; immunohistochemistry ; peripheral T-cell lymphoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: One hundred sixty-eight peripheral T-cell lymphomas (PTCLs)were reviewed according to the Revised European–American Lymphoma (R.E.A.L.)Classification. Patients and methods: The cases, originally diagnosed on the basis of theUpdated Kiel Classification (UKC), were all provided with histologicalpreparations, immunophenotype, clinical information, and follow-up data. Theslides were reclassified by five observers, who integrated the R.E.A.Lcriteria with cell size measurements. The prognostic value of clinical andpathologic findings was assessed by univariate and multivariate analysis. Results: The R.E.A.L. Classification was reproducibly applied by all of theobservers. Clinically, anaplastic large cell lymphomas (ALCLs) differed fromthe remaining PTCLs by mean age (29.5 vs. 52.9 years), bulky disease(52.3% vs. 11.3%; P = 0.000), mediastinal mass (52.7% vs.32%; P = 0.004), and disease-free survival (68.0% vs.38.2%; P = 0.0001). Although each histological type displayed specificclinical aspects, PTCLs other than ALCL were basically characterised by a poorclinical outcome which was not influenced by the UKC malignancy grade. Atmultivariate analysis, the risk of a lower complete remission rate was relatedto bulky disease (P = 0.001), histologic group (non-ALCL) (P = 0.01), andadvanced stage (III–IV) (P = 0.0002). Conclusions: The present study supports the classification of T-celllymphomas proposed by the R.E.A.L. scheme.
    Type of Medium: Electronic Resource
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