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The mode of passive protection against Hymenolepis nana induced by serum transfer


International Journal for Parasitology 7(1): 67-71
The mode of passive protection against Hymenolepis nana induced by serum transfer
A protective immunity against the cestode H. nana was transferred with serum taken from actively immunized mice. All of 17 pooled sera examined, taken from mice immunized for 3 wk or more, were strongly effective. I.p. injection of a total of 3.0 ml serum made the recipient mice (4-5 wk old) almost completely immune. In almost all the mice given immune serum no cysticercoids were found on day 4. In mice receiving immune serum, oncospheres hatched, invaded the intestinal villi and differentiated to stage II or III larvae, but failed to develop to fully developed cysticercoids. The degree of protection conferred by serum transfer was similar to, but slightly weaker than that stimulated by active immunization. The major effect of immune serum was damaging hatched oncospheres in both the intestinal lumen and the villi within 1 day post infection.


Accession: 006719457

PMID: 858658

DOI: 10.1016/0020-7519(77)90027-3



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