Protection of cattle against Babesia major by the inoculation of irradiated piroplasms.

@article{Purnell1978ProtectionOC,
  title={Protection of cattle against Babesia major by the inoculation of irradiated piroplasms.},
  author={Ramsey Purnell and David W. Brocklesby and Annette J. Stark},
  journal={Research in veterinary science},
  year={1978},
  volume={25 3},
  pages={388-90}
}
Two experiments were carried out on Babesia major in splenectomised calves. In the first one, the parasite was titrated and a linear relationship was observed between infective dose (10(2)--10(7) parasites) and onset of disease. In the second experiment aliquots of 1.2 X 10(10) parasites were irradiated at doses of 24, 28, 32, 36 and 40 krads and inoculated… CONTINUE READING