has role immunizes against disease immunizes against pathogen test in lab animal model tuberculosis Cavia porcellus Mycobacterium tuberculosis Mycobacterium tuberculosis vaccine vaccine in research role attenuated Mycobacterium bovis strain WAg520 vaccine PMID:10225931 vaccine VIOLIN: https://violinet.org/vaxquery/vaccine_detail.php?c_vaccine_id=179 attenuated M. bovis strain WAg520 179 Oliver He live attenuated bacterial vaccine live attenuated vaccine role