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  • 34.80.D  (3)
  • CD40L  (2)
  • Th. junceum  (2)
  • Springer  (7)
  • International Union of Crystallography (IUCr)
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  • Springer  (7)
  • International Union of Crystallography (IUCr)
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  • 1
    ISSN: 1434-6079
    Keywords: 34.80.D
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Distorted-wave Born approximation calculations are reported for electron impact ionization of He, Ne, Ar, Kr and Xe in coplanar symmetric geometry at energies of 100, 500 and 1000 eV. Of special interest is double scattering effect at large angles.
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  • 2
    ISSN: 1569-8041
    Keywords: CD30L ; CD40L ; FasL ; Hodgkin's disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Reed–Sternberg cells of Hodgkin's disease express CD30and CD40 receptors. The ligands for these receptors have been reported to have pleiotropic biologic activities in vitro, including induction of cell death. Expression of the ligands for these receptors in lymph nodes involved with Hodgkin's disease is not known. Purpose: The purpose of this study was to examine CD30 ligand (L) andCD40L expression in lymph nodes of patients with Hodgkin's disease, and to study CD30L expression on nodal lymphocyte subsets. Materials and methods: CD30L expression on subsets of lymphocytes of five lymph nodes involved with Hodgkin's disease was determined by two-color FACScan. Messenger RNA expression of CD30L and CD40L was determined by there verse-transcriptase polymerase chain reaction (RT-PCR) method performed on seven specimens involved with Hodgkin's disease (five lymph nodes and two spleens). Results: Four of seven specimens (57%) contained cells that expressed CD30L mRNA and three specimens (43%) containedCD40L-expressing cells. The mean percentage of nodal lymphocytes expressingCD30L surface protein was ≤20%. Conclusion: Hodgkin's disease lymph nodes and spleens frequently lackCD30L- and CD40L-expressing cells, and when CD30L is expressed, it is usually detected on few numbers of lymphocytes. The differences in the level of expression of these ligands in Hodgkin's disease lymph nodes may be related to the disease's clinical behavior.
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  • 3
    ISSN: 1569-8041
    Keywords: CD30L ; CD40L ; FasL ; Hodgkin's disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Reed–Sternberg cells of Hodgkin's disease express CD30and CD40 receptors. The ligands for these receptors have been reported tohave pleiotropic biologic activities in vitro, including induction of celldeath. Expression of the ligands for these receptors in lymph nodes involvedwith Hodgkin's disease is not known. Purpose: The purpose of this study was to examine CD30 ligand (L) andCD40L expression in lymph nodes of patients with Hodgkin's disease, and tostudy CD30L expression on nodal lymphocyte subsets. Materials and methods: CD30L expression on subsets of lymphocytes of fivelymph nodes involved with Hodgkin's disease was determined by two-colorFACScan. Messenger RNA expression of CD30L and CD40L was determined by thereverse-transcriptase polymerase chain reaction (RT-PCR) method performed onseven specimens involved with Hodgkin's disease (five lymph nodes and twospleens). Results: Four of seven specimens (57%) contained cells thatexpressed CD30L mRNA and three specimens (43%) containedCD40L-expressing cells. The mean percentage of nodal lymphocytes expressingCD30L surface protein was ≤20%. Conclusion: Hodgkin's disease lymph nodes and spleens frequently lackCD30L- and CD40L-expressing cells, and when CD30L is expressed, it is usuallydetected on few numbers of lymphocytes. The differences in the level ofexpression of these ligands in Hodgkin's disease lymph nodes may be relatedto the disease's clinical behavior.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1434-6079
    Keywords: 34.80.D
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Absolute triple differential cross sections for the ionisation of He by electrons with energies near 300 eV have been measured in asymmetric conditions. The kinematics of the experiment select ionising events which belong to the intermediate regime of energy and momentum transfer. The experiments are compared with the distorted wave Born approximation.
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  • 5
    ISSN: 1434-6079
    Keywords: 34.80.D
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Results of measurements for electron impact ionization of atomic helium are reported for energy-sharing kinematics in a coplanar asymmetric geometry. Incident energies of 100 eV and 200 eV are considered and comparison with previous experiments in fully symmetric kinematics allows the results to be put on an absolute scale. The cross-sections are compared with those obtained from two variants of the distorted wave Born approximation (DWBA) model. Good general agreement is obtained for the form of the angular distributions. The absolute magnitude of the cross sections is however not compatible with the choice of half-on-shell Coulomb T-Matrix currently used in the distorted wave impulse and related approximations.
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  • 6
    ISSN: 1432-2242
    Keywords: Thinopyrum ponticum ; Th. intermedium ; Th. junceum ; Wheat ; BYDV ; Genome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Twenty-five partial amphiploids (2n=8x=56), which were derived from hybrids of wheat (Triticum aestivum L.) with either Thinopyrum ponticum (Podpera) Liu & Wang, Th. intermedium (Host) Barkworth & D. Dewey, or Th. junceum (L.) A. Löve, were assayed for resistance to BYDV serotype PAV by slot-blot hybridization with viral cDNA of a partial coat protein gene. Three immune lines were found among seven partial amphiploids involving Th. ponticum. Seven highly resistant lines were found in ten partial amphiploids involving Th. intermedium. None of eight partial amphiploids or 13 addition lines of Chinese Spring — Th. junceum were resistant to BYDV. Genomic in situ hybridization demonstrated that all of the resistant partial amphiploids, except TAF46, carried an alien genome most closely related to St, whether it was derived from Th. ponticum or Th. intermedium. The two partial amphiploids carrying an intact E genome of Th. ponticum are very susceptible to BYDV-PAV. In TAF46, which contains three pairs of St- and four pairs of E-genome chromo somes, the gene for BYDV resistance has been located to a modified 7 St chromosome in the addition line L1. This indicates that BYDV resistance in perennial polyploid parents, i.e., Th. ponticum and Th. intermedium, of these partial amphiploids is probably controlled by a gene(s) located on the St-genome chromosome(s).
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  • 7
    ISSN: 1432-2242
    Keywords: Key wordsThinopyrum ponticum ; Th. intermedium ; Th. junceum ; Wheat ; BYDV ; Genome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Twenty-five partial amphiploids (2n=8x=56), which were derived from hybrids of wheat (Triticum aestivum L.) with either Thinopyrum ponticum (Podpera) Liu & Wang, Th. intermedium (Host) Barkworth & D. Dewey, or Th. junceum (L.) A. Löve, were assayed for resistance to BYDV serotype PAV by slot-blot hybridization with viral cDNA of a partial coat protein gene. Three immune lines were found among seven partial amphiploids involving Th. ponticum. Seven highly resistant lines were found in ten partial amphiploids involving Th. intermedium. None of eight partial amphiploids or 13 addition lines of Chinese Spring –Th. junceum were resistant to BYDV. Genomic in situ hybridization demonstrated that all of the resistant partial amphiploids, except TAF46, carried an alien genome most closely related to St, whether it was derived from Th. ponticum or Th. intermedium. The two partial amphiploids carrying an intact E genome of Th. ponticum are very susceptible to BYDV-PAV. In TAF46, which contains three pairs of St- and four pairs of E-genome chromosomes, the gene for BYDV resistance has been located to a modified 7St chromosome in the addition line L1. This indicates that BYDV resistance in perennial polyploid parents, i.e., Th. ponticum and Th. intermedium, of these partial amphiploids is probably controlled by a gene(s) located on the St-genome chromosome(s).
    Type of Medium: Electronic Resource
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