Fernanda Mozzi, Ph.D., Raúl R. Raya, Ph.D. and Graciela M. Vignolo , Ph.D are colleagues at Centro de Referencia para Lactobacilos (CERELA) -CONICET, Tucumán, Argentina. Drs. Mozzi, Raya and Vignolo are engaged as Scientific Researchers by the National (Argentinean) Council for Scientific and Technological Research (CONICET).