Eosinophil interactions with Haemonchus contortus larvae in the ovine gastrointestinal tract.


Sheep were immunized by weekly oral infections with Haemonchus contortus for 9 weeks followed by anthelmintic treatment. They were challenged either 9 or 22 weeks later with PBS (sham controls) or one million exsheathed L3 surgically injected in the abomasum, and killed 24 h or 48 h later. Sheep challenged 9 weeks after immunization displayed varying… (More)


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