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  • Title: Comparison of immunospecific antibody response in young and old chickens immunized with human IgG.
    Author: Bollen LS, Hau J.
    Journal: Lab Anim; 1999 Jan; 33(1):71-6. PubMed ID: 10759395.
    Abstract:
    Three groups of 18-month-old chickens and three groups of 5-month-old chickens were immunized with human immunoglobulin G (IgG) using one of three adjuvants in the first injection (Freund's Complete Adjuvant (FCA), Freunds Incomplete Adjuvant (FIA) and Hunter's TiterMax (HTM)) following the same immunization scheme. The specific antibody response in serum was measured by ELISA. In both older and younger chickens the serum antibody response in the FCA group reached a significantly higher level (P < 0.01) than in the FIA group and in the HTM group on week 5. The FCA group also had a significantly higher (P < 0.01) response on week 10 compared to the HTM group. Other than that, there was no significant difference between the three adjuvant groups in specific serum antibody response in older chickens. In the younger chickens the specific serum antibody response in the FCA group was significantly higher (P < 0.05) than the response in the HTM group. There was no significant difference in the chicken serum antibody response between the FCA and the FIA groups, nor was there a significant difference between the FIA and the HTM groups. Comparing the younger chickens and the older chickens immunized using the same adjuvant, the older chickens had consistently higher titres than the younger chickens, although the difference was not always significant.
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