نتایج جستجو برای: helper
تعداد نتایج: 22871 فیلتر نتایج به سال:
PURPOSE The product of the carcinoembryonic antigen (CEA) gene is an attractive candidate for T-cell-based immunotherapy because it is frequently expressed in epithelial solid carcinomas. Although many CEA peptide epitopes capable of stimulating CTLs have been identified, no MHC class II-restricted T helper epitope has yet been reported. EXPERIMENTAL DESIGN The amino acid sequence of CEA was ...
Effector functions in the immune system are carried out by a variety of cell types, and as our understanding of the complexity of the system expands, the number of recognized subdivisions of cell types also continues to increase. B lymphocytes, producing antibody, were initially distinguished from T lymphocytes, which provide help for B cells (1, 2). The T-cell population was further divided wh...
Abstract In cooperatively breeding species, the presence of male helpers in a group often reduces female’s fidelity to her social partner, possibly because there is more than one potential sire group. Using long-term study superb fairy-wrens (Malurus cyaneus) and records paternity 1936 broods, we show that effect on rates extrapair varied according helpers’ relatedness female. The unrelated inc...
Helper and suppressor T-cell activities were detected simultaneously in the spleen cells of mice immunized with para-azobenzoate (PAB)-mouse gammaglobulin (MGG). Dinitrophenyl (DNP)-specific B cells were raised by immunization with DNP-keyhole limpet hemocyanin (KLH) and used as the indicator B-cell population. The helper and suppressor T-cell activities were determined after adoptively transfe...
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