Cárdenas, L Oral immunization using live attenuated Salmonella spp. as carriers of foreign antigens. [electronic resource] - Clinical microbiology reviews Jul 1992 - 328-42 p. digital Publication Type: Journal Article; Review ISSN: 0893-8512 Standard No.: 10.1128/CMR.5.3.328 doi Subjects--Topical Terms: Administration, OralAntigens--geneticsBacterial Vaccines--immunologyGenetic VectorsHumansImmunizationMutationSalmonella--geneticsVaccines, Attenuated--immunology