Williams, D J L Immunization of cattle with live tachyzoites of Neospora caninum confers protection against fetal death. [electronic resource] - Infection and immunity Mar 2007 - 1343-8 p. digital Publication Type: Comparative Study; Journal Article; Randomized Controlled Trial ISSN: 0019-9567 Standard No.: 10.1128/IAI.00777-06 doi Subjects--Topical Terms: AnimalsAntibodies, Protozoan--biosynthesisCattleCell Extracts--immunologyCoccidiosis--immunologyFemaleFetal Death--immunologyNeospora--immunologyPregnancyProtozoan Vaccines--administration & dosageVaccines, Attenuated--administration & dosage