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The experimental approach used was to treat mice with an anti-CCR3 monoclonal antibody to eliminate eosinophils or to use CXCR2<jats:sup>\u2212\/\u2212<\/jats:sup>mice, which have a severe neutrophil recruitment defect, and then determine the effect of the reduction or elimination of the particular cell type on larval killing. It was determined that eosinophils killed the<jats:italic>S. stercoralis<\/jats:italic>larvae in nai\u0308ve mice, whereas these cells were not required for the accelerated killing of larvae in immunized mice. Experiments using CXCR2<jats:sup>\u2212\/\u2212<\/jats:sup>mice demonstrated that the reduction in recruitment of neutrophils resulted in significantly reduced innate and adaptive protective immunity. Protective antibody developed in the immunized CXCR2<jats:sup>\u2212\/\u2212<\/jats:sup>mice, thereby demonstrating that neutrophils were not required for the induction of the adaptive protective immune response. Moreover, transfer of neutrophil-enriched cell populations recovered from either wild-type or CXCR2<jats:sup>\u2212\/\u2212<\/jats:sup>mice into diffusion chambers containing larvae demonstrated that larval killing occurred with both cell populations when the diffusion chambers were implanted in immunized wild-type mice. Thus, the defect in the CXCR2<jats:sup>\u2212\/\u2212<\/jats:sup>mice was a defect in the recruitment of the neutrophils and not a defect in the ability of these cells to kill larvae. This study therefore demonstrated that both eosinophils and neutrophils are required in the protective innate immune response, whereas only neutrophils are necessary for the protective adaptive immune response to larval<jats:italic>S. stercoralis<\/jats:italic>in mice.<\/jats:p>","DOI":"10.1128\/iai.01958-05","type":"journal-article","created":{"date-parts":[[2006,9,20]],"date-time":"2006-09-20T23:06:35Z","timestamp":1158793595000},"page":"5730-5738","update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":101,"title":["Role of Eosinophils and Neutrophils in Innate and Adaptive Protective Immunity to Larval<i>Strongyloides stercoralis<\/i>in Mice"],"prefix":"10.1128","volume":"74","author":[{"given":"Ann Marie","family":"Galioto","sequence":"first","affiliation":[{"name":"Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, Pennsylvania 19104"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jessica A.","family":"Hess","sequence":"additional","affiliation":[{"name":"Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, Pennsylvania 19104"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas J.","family":"Nolan","sequence":"additional","affiliation":[{"name":"Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gerhard A.","family":"Schad","sequence":"additional","affiliation":[{"name":"Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James J.","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Biochemistry and Molecular Biology, Mayo Clinic-Scottsdale, Scottsdale, Arizona 85259"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David","family":"Abraham","sequence":"additional","affiliation":[{"name":"Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, Pennsylvania 19104"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"235","reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1128\/IAI.72.2.810-817.2004"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1006\/expr.1995.1036"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1093\/intimm\/12.6.899"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1002\/jlb.66.1.144"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.4049\/jimmunol.172.2.1237"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0169-4758(99)01620-8"},{"key":"e_1_3_2_8_2","doi-asserted-by":"crossref","first-page":"1033","DOI":"10.1189\/jlb.71.6.1033","volume":"71","year":"2002","unstructured":"Borchers, M. 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