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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of immunology 34 (1991), S. 0 
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We searched for the presence of IL2 receptor (CD25) on T cells as an activation marker m lymph nudes involved by B-cell non-Hodgkin's lymphomas (B-NHL). In 26 malignant lymph nodes studied, the number of CD25+ T cells among total T cells was usually low when assessed by immunofluorescence analysis (mean ± SD: 6.7%± 11.2%), but greatly increased when an immunomagnetic rosette method was used (mean±SD: 17.5% plusmn; 16.6%). In six cases. CD25-/CD25/CD25+ cells were isolated by immunomagnetic separation, with a purity greater than 97%, for both populations. Expansion of CD25-/CD25+ T cells was obtained with IL2 and PHA, then conditioned media (CM) were prepared. No IL2 activity was found in CM from both CD25-/CD25+ T cells when tested on CTLL2 cells. BCGF and BCDF μ/γ activities were assayed on normal B cells stimulated with soluble or insolubilized anti-μ antibodies (BCGF) or with Cowan I (BCDF). Results of production of all these activities were comparable for both populations, and thus do not favour the possibility that CD25+ T cells closely associated with malignant B-NHL cells in lymph nodes may influence their proliferation (BCGF) or expression/secretion of heavy chain isotype (BCDF μ/γ).
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1600-065X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 1 (1982), S. 655-665 
    ISSN: 0392-6737
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Sono stati studiati gli effetti prodotti da un'onda convergente che si propaga attraverso un plasma. I dati sperimentali forniscono delle prime indicazioni sull'interazione di un'onda d'urto debole convergente con un plasma piuttosto inomogeneo, di densità intermedia (≃1018 cm−3), alla temperature di qualche eV. È stato riscontrato che la maggior parte dell'energia dell'onda convergente è spesa per la ionizzazione degli strati esterni e piú freddi del plasma. Nell'idrogeno l'energia residua dell'onda d'urto produce un rallentamento nel raffreddamento naturale del plasma, mentre nell'elio la piú bassa temperature iniziale e le piú alte energie di ionizzazione impediscono il manifestarsi di apprezzabili effetti di temperatura.
    Abstract: Резюме Исследуются эффекты, возникающие при прохождении сходящейся ударной волны через плазму. Эксперименталъные данные обнаруживают взаимодействие слабой сходящейся ударной волны с достаточно неоднородной плазмой с плотностъю (∼1018 см−3) при температуре в несколъко эВ. Обнаружено, что болъщая частъ энергии сходящейся ударной волны затрачивается на ионизацию холодных внешинх слоев плазмы. В водороде оставщаяся энергия ударной волны затрачивается на замедление в процессе естественного адиабатического охлаждения плазмы, тогда как в гелии более низкая температура и более высокие энергии ионизации препятствуют заметному температурному эффекту.
    Notes: Summary We tested the effects produced by a converging shock wave propagating through a plasma. Experimental data gave the first indications on the interaction of a weak converging front with a fairly inhomogeneous, intermediate-density (∼1018 cm−3) plasma at a temperature of few eV. It is found that most of the energy of the converging shock wave is devoted to the ionization of the cold external layers of the plasma. In hydrogen the residual shock energy produced a stop in natural adiabatic cooling, while in helium the lower temperature and the higher ionization energies avoided any appreciable temperature effect.
    Type of Medium: Electronic Resource
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