Immunogenicity and protective efficacy of tuberculosis DNA vaccines encoding putative phosphate transport receptors., Tanghe, A, Lefèvre P, Denis Olivier J., D'Souza S, Braibant M, Lozes E, Singh M, Montgomery D, Content J, and Huygen K , J Immunol, 1999 Jan 15, Volume 162, Issue 2, p.1113-9, (1999)