has role immunizes against disease immunizes against pathogen test in lab animal model brucellosis Mus musculus Brucella abortus vaccine in research role live attenuated Brucella abortus vaccine live attenuated Brucella abortus strain RB51 cydC cydD double deletion vaccine 2026-10-25T08:06:33Z VaxAgent 12256 PMID:26341622 Brucella abortus strain RB51 ΔcydC ΔcydD live attenuated double mutant vaccine Jie Zheng vaccine VIOLIN: https://violinet.org/vaxquery/vaccine_detail.php?c_vaccine_id=12256 Live attenuated Brucella abortus vaccine using live attenuated RB51 mutants with single deletions (δcydc, δcydd, δpurd) and double deletions (δcydcδcydd, δcydcδpurd) were generated. Single immunization with mutants induced lower protection than parental RB51. Mutants induced a mixed but t-helper-1-biased humoral and cellular. live attenuated vaccine role