Abstract
EARLIER, studies with sheep infested with Haemonchus contortus or with Trichostrongylus colubriformis1–3 showed that the ‘self-cure’ phenomenon was caused by the intake of infective larvæ by sheep rendered hypersensitive as a result of previous infestations. The hypersensitive reaction was evidenced by a transient rise in blood-histamine within four days, by the development of skin-sensitivity to an antigen prepared from larvæ and by the development of œdema in the portion of the alimentary tract infested.
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References
Stewart, D. F., Aust. J. Agric. Res., 1, 301 (1950).
Stewart, D. F., Aust. J. Agric. Res., 1, 427 (1950).
Stewart, D. F., Aust. J. Agric. Res., 4, 100 (1953).
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STEWART, D. ‘Self-Cure’ in Nematode Infestations of Sheep. Nature 176, 1273–1274 (1955). https://doi.org/10.1038/1761273b0
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DOI: https://doi.org/10.1038/1761273b0
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