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Acquired Resistance to Babesia divergens in Experimental Calves
Author(s) -
JOYNER L. P.,
DAVIES S. F. M.
Publication year - 1967
Publication title -
the journal of protozoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 0022-3921
DOI - 10.1111/j.1550-7408.1967.tb01994.x
Subject(s) - babesiosis , biology , immunity , babesia , virology , persistence (discontinuity) , immunology , veterinary medicine , immune system , medicine , geotechnical engineering , engineering
SYNOPSIS. One intact and 2 splenectomized calves were infected with Babesia divergens and the persistence of the parasites in the blood was followed by periodic subinoculations into susceptible splenectomized calves. After periods varying from 3–7 years the parasites failed to be demonstrable by this method. When the immunity of the animals was challenged by the intravenous injection of blood containing Babesia divergens , they were all resistant to reinfection. These observations add support to the suggestion that sterile immunity may play a part in the resistance of cattle to reinfection with B. divergens.