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  • Title: Vaccines against blowfly strike: the effect of adjuvant type on vaccine effectiveness.
    Author: East IJ, Eisemann CH, Vuocolo T, Pearson RD, Donaldson RA, Cadogan LC.
    Journal: Int J Parasitol; 1992 May; 22(3):309-14. PubMed ID: 1639566.
    Abstract:
    Vaccination of sheep with a partially purified extract of Lucilia cuprina larvae in some cases resulted in marked reduction of growth in larvae which fed on the sheep. Twelve adjuvants were assessed, in vitro and in vivo, to determine which induced the largest inhibitory effect on larval growth. The Freund's complete adjuvant and Quil A groups produced ELISA antibody levels significantly higher (P less than 0.05) than other groups. Seven adjuvants mediated an immune response which caused significant inhibition of larval growth (P less than 0.05). When the sheep were assessed by in vivo larval culture, only larvae feeding on sheep vaccinated with the antigen presented in Freund's complete adjuvant or dextran sulphate or a dextran sulphate/Freund's incomplete adjuvant mixture weighed significantly less (P less than 0.05) than larvae feeding on control sheep. The effect on larvae was monitored in vitro for 70 days after vaccination, by which time significant reduction in larval weight was no longer observed. The loss of larval growth inhibition was not associated with a corresponding reduction in overall antibody levels.
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