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Effect of onion extract on immune response in rabbits

, : Effect of onion extract on immune response in rabbits. Bangladesh Medical Research Council Bulletin 22(2): 81-85

A total of 40 NZW rabbits were selected for this study to see the effect of onion extract on immune response following antigenic challenge. These animals were randomly divided into four groups, each composed of ten rabbits. Group I and II were challenged with typhoid H (TH) antigen and groups III and IV with sheep red blood cells (SRBC). Groups I and III were considered as control and II and IV as treated groups. The latter two groups were treated with onion extract orally. The immunosuppressive effect of onion extract was evaluated by estimating antibody levels by Widal test and hemolysin titer. It was found that mean antibody titers were significantly lower in the treated groups than in controls. The weights of thymus and lymph nodes were higher and of adrenal glands were lower in the control groups than in the treated groups. It appeared from the current study that onion extract has an inhibitory effect on immune response.


PMID: 9103661

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