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  • Title: Comparative toxicity, protective, histamine sensitizing and leucocytosis promoting activities in mice of Bordetella pertussis culture fluid, bacterial cells and cell extracts.
    Author: Megret F, Fournier JM, Alouf JE.
    Journal: Med Microbiol Immunol; 1984; 173(4):225-32. PubMed ID: 6096686.
    Abstract:
    Bordetella pertussis bacterial cells, bacterial extracts, and concentrated culture supernatant fluid were comparatively examined for histamine sensitizing and leucocytosis promoting activities, toxicity (mouse weight gain test), immunoprotective potency and lipopolysaccharide bioassay. The activity of histamine sensitizing factor always paralleled that of leucocytosis promoting factor. In contrast, important differences were demonstrated regarding the toxicity and protective activity of the three preparations. Culture supernatant was more toxic and less protective than either bacterial cells or cell extract. Although the latter had lower protective potency than whole cells, its lower toxicity might lead to its consideration as a possible potential vaccine.
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