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Precipitating antibody to blood trypanosome antigens was found solely in the IgG fraction.<\/jats:p><jats:p>On the basis of the data presented here a working hypothesis is developed to explain the raised IgM immunoglobulin levels found in the sera of rabbits and humans infected with<jats:italic>T. gambiense<\/jats:italic>.<\/jats:p>","DOI":"10.1017\/s003118200008224x","type":"journal-article","created":{"date-parts":[[2009,6,5]],"date-time":"2009-06-05T17:15:30Z","timestamp":1244222130000},"page":"283-292","source":"Crossref","is-referenced-by-count":29,"title":["The presence of agglutinating antibody in the IgM immunoglobulin fraction of rabbit antiserum during experimental African trypanosomiasis"],"prefix":"10.1017","volume":"59","author":[{"given":"J. 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