期刊名称:Proceedings of the National Academy of Sciences
印刷版ISSN:0027-8424
电子版ISSN:1091-6490
出版年度:1977
卷号:74
期号:3
页码:1200-1203
DOI:10.1073/pnas.74.3.1200
语种:English
出版社:The National Academy of Sciences of the United States of America
摘要:Serum from bacillus Calmette-Guerin-infected mice injected with endotoxin induces the appearance of surface immunoglobulin, Ia antigen, and complement receptor on the surface of precursor bone-marrow-derived (B) cells. While endotoxin itself causes phenotypic conversion of both thymus-derived (T) cells and B cells in vitro, the endotoxin-induced serum factor was found to be a selective inducer of B cell differentiation. Spleen cells rendered immunodeficient by removal of B cells bearing the complement receptor regained the capacity to cooperate with helper T cells and to produce antibody against red cell antigens in vitro upon upon addition of the serum factor to the culture medium. Thus, a factor that controls selective phenotypic and functional differentiation of B cells has been identified and can now be characterized,