title: [Immune tolerance at 50 years from the Nobel Prize in Medicine and Physiology: a perspective as a mechanism of immune response against pathogens].
authors.affiliation: Instituto de Inmunología Clínica, Facultad de Medicina, Universidad de Los Andes, Mérida, Venezuela. lberruet@ula.ve
authors.forename: Lisbeth
authors.initials: L
authors.lastname: Berrueta
authors.forename: Siham
authors.initials: S
authors.lastname: Salmen