Pretorius, A Protection against heartwater by DNA immunisation with four Ehrlichia ruminantium open reading frames. [electronic resource] - Vaccine Mar 2007 - 2316-24 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 0264-410X Standard No.: 10.1016/j.vaccine.2006.11.061 doi Subjects--Topical Terms: AnimalsCpG Islands--geneticsEhrlichia ruminantium--geneticsHeartwater Disease--immunologyImmunization--methodsLymphocytes--immunologyOpen Reading Frames--geneticsSheepVaccines, DNA--administration & dosage