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Surface phenotypic markers and the function of lymphocytes in patients affected with the X-linked lymphoproliferative syndrome (XLP) were studied. This syndrome is characterized by a defective response to infection with Epstein Barr virus (EBV). Normal numbers of B and T cells were detected with anti-Ig and monoclonal OKT3 antisera, respectively. T cell(More)
Eleven males with XLP were evaluated for EBV-specific antibodies during periods of 2 to 7 yr. Variable responses to EBV-specific antigens were found. All 11 patients had subnormal anti-EBNA titers, which probably reflected a T cell deficiency. The patients showed four different patterns in their anti-VCA response: 1) two boys who had experienced malignant(More)
Analyses of 100 subjects with the X-linked lymphoproliferative syndrome (XLP) in 25 kindreds revealed four major interrelated phenotypes: infectious mononucleosis, malignant B-cell lymphoma, aplastic anemia, and hypogammaglobulinemia. Eighty-one of the patients died. Two male subjects were asymptomatic but showed immunodeficiency to Epstein-Barr virus(More)
The stability in vivo and circulatory clearance of immunotoxins were assessed in rhesus monkeys. The immunotoxins studied were T cell-specific monoclonal anti-T11 antibodies conjugated by disulfide linkage to ribosome-inactivating toxins. Intact immunotoxin was detectable in the circulation of the monkeys following a single intravenous infusion. This was(More)
The type C retrovirus simian T-lymphotropic virus type III (STLV-III) has been isolated recently from immunodeficient macaque monkeys at the New England Regional Primate Research Center. The present studies were done to define the in vitro growth characteristics of this agent. STLV-III replicates efficiently in interleukin 2-dependent T-cell cultures of(More)
Acquired immune suppression accompanying normal pregnancy may be associated with reactivation of Epstein-Barr virus (EBV). Pregnant women with reactivated EBV having anti-EA antibodies show high titers of antiviral capsid antigen (VCA) geometric mean titers (GMT) of 522 versus 170 in those lacking anti-early antigen (EA). Among twenty-seven seropositive(More)
In 1974, an 11-year-old white boy with the X-linked lymphoproliferative syndrome developed hyper-IgM after becoming infected with Epstein-Barr virus. However, he failed to develop normal immune responses against the virus. In December 1981, when red cell aplasia occurred, he was given packed erythrocytes and gammaglobulin. Nine weeks later, acute infectious(More)
The effects of in vivo administration of three monoclonal antibodies specific for T11, the E rosette receptor on T lymphocytes, were examined in the rhesus monkey (Macaca mulatta). These three monoclonal antibodies were of different isotypes and were shown in in vitro studies to have differing affinities for the monkey T11 structure. Furthermore, each(More)