IFN-gamma diagnostic tests in the context of bovine mycobacterial infections in Belgium37, Walravens, K., Marché Sylvie, Rosseels V., Wellemans V., Boelaert F., Huygen K, and Godfroid J. , Vet.Immunol.Immunopathol., 10/9/2002, Volume 87, Issue 3-4, Number 406, p.401 - 406, (2002)