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  • Title: Trichostrongylus colubriformis and Heligmosomoides polygyrus: relationship between infectivity and exsheathment during ageing of infective larvae.
    Author: Lesage MC, Mallet S.
    Journal: Ann Rech Vet; 1987; 18(3):279-83. PubMed ID: 3426114.
    Abstract:
    Infective larvae of two trichostrongyle parasites of the small intestine were stored from 0 to 22 weeks at 24 degrees C for T colubriformis and from 0 to 82 weeks at 4 degrees C for H polygyrus. A loss in infectivity with ageing was observed in vivo as well as a decrease in the exsheathment potential (number of larvae exsheathed in vitro after 20 min of incubation). A linear regression was established between the number of larvae exsheathed in vitro within 20 min and the number of adult worms developed in vivo.
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