Abstract
Investigation of restriction fragment length polymorphisms (RFLPs) associated with immunoglobulin E (IgE) and cytokine genes in the sheep genome revealed polymorphisms in the IgE constant heavy chain, interferon γ and interleukin 4 genes. No polymorphisms were found in interleukin 1β or tumour necrosis factor α. PstI and BamHI RFLPs in the IgE gene showed differences in frequency between animals selected for resistance or susceptibility to fleece rot and blowfly strike.
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