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Background. T-cell response to alloantigen is dependent on T-cell receptor activation and costimulation through the CD28 receptor, because T-cell receptor activation alone is insufficient for optimal immune response. The CD28 receptor on helper T cells interacts with its ligand B7 on activated B cells-macrophages as costimulus to support T-cell activity. CTLA4Ig is a recombinant inhibitor of CD28...
Background. During induced ischemia for cardiac surgery inefficient anaerobic energy mechanisms predominate. Sustaining aerobic metabolism with perfluorocarbon-supplemented blood cardioplegia theoretically could lead to improved postischemic recovery. Therefore we studied functional recovery after myocardial ischemia, comparing perflubron (C 8 F 17 Br) supplemented blood cardioplegia...
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