Brucella fractions behave as nonspecific mitogens and polyclonal B-cell activators for human lymphocytes
نویسندگان
چکیده
منابع مشابه
Selective Triggering of Human T and B Lymphocytes in Vitro by Polyclonal Mitogens
Human lymphocytes from spleen and tonsils have been cultured with a variety of polyclonal mitogens. Cultures consisted of either unseparated T and B cells or alternatively purified T or B lymphocytes. The purity of the starting cell populations and the origin of activated lymphoblasts was analyzed with a panel of seven markers which discriminate between T and B cells. The selectivity of the lym...
متن کاملBilobulated circulating lymphocytes in persistent polyclonal B-cell lymphocytosis.
Correspondence: Lourdes Florensa, MD, Laboratori de Citologia Hematològica, Laboratori de Referència de Catalunya, Hospital de l’Esperança, Av. Sant Josep de la Muntanya 12, 08024 Barcelona, Spain. Phone: international +34-93-285.02.00 ext 2189-2243 – Fax: international +34-93-210.84.06 – E-mail: [email protected] A44-year-old female was referred for investigation of a 10-year persistent lymph...
متن کاملPolyclonal B-cell lymphocytosis with binucleated lymphocytes (PPBL)
Persistent polyclonal B-cell lymphocytosis (PPBL) is a rare and recently described entity. The review of the literature show PPBL is diagnosed predominantly but not exclusively in women, usually smokers. PPBL is recognized by a moderate, chronic and absolute lymphocytosis (>4 × 10(9)/l) in the peripheral blood. In 10% of cases without lymphocytosis, the PPBL diagnosis has to be suggested by per...
متن کاملCharacterization of self-reactive B cells by polyclonal B-cell activators
The existence of autoreactive B cells was predicted by theoretical considerations and, recently, confirmed by direct experiments. The aim of the present work was to investigate if the capacity of self-reactive B cells to be activated with different polyclonal B-cell activators (PBA) reflects the heterogeneity of the response as seen in all the Ig-positive cells. We injected mice with dextran su...
متن کاملPolyclonal activation of human B lymphocytes by Fc fragments. I. Characterization of the cellular requirements for Fc fragment-mediated polyclonal antibody secretion by human peripheral blood B lymphocytes
Fc fragments derived from human immunoglobulin were found to be capable of inducing both a proliferative and polyclonal antibody response in human peripheral blood lymphocyte cultures. The cell population proliferating in response to Fc fragments belongs to the B cell lineage. Expression of polyclonal antibody formation requires the presence of both adherent monocytes and T cells. The role of t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Infection and Immunity
سال: 1985
ISSN: 0019-9567,1098-5522
DOI: 10.1128/iai.50.1.310-316.1985