The Role of the Larval Stages of Haemonchus placei Infections of Cattle in Immunity
作者： John G. Ross
DOI: 10.1017/S0022149X00019969
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摘要: Using the larvicidal anthelmintic “Neguvon”, infections of calves with H. placei were terminated at time moult from fourth to fifth stage. A comparison was then made between level immunity developed by which had experienced, third and stages, third, parasite free calves. The results suggested that principal stage necessary produce a substantial fifth. Evidence also produced associate local reaction in abomasum characterised oedema aggregations eosinophils mucosa challenge.
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