Ingestion of host immunoglobulin by three non-blood-feeding nematode parasites of ruminants.


Host immunoglobulin was detected in homogenates of adult worms or fourth stage larvae of Haemonchus contortus, Ostertagia ostertagi, O circumcincta and Dictyocaulus viviparus, but not in preparasitic third stage larvae of H contortus. All the worms had been washed in detergent before being homogenised to remove any immunoglobulin adhering to the cuticle… (More)


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