title: Oral immunization against influenza.
abstract: An anti influenza vaccine was administered by oral route, as capsules, to 24 volunteers. The presence of IgAs in nasal secretions led us to the fact that some lymphocytes of the small intestine were the precursors of circulating IgAs, and, while proliferating, they settled on mucous sites at a distance.
mesh_terms: D000284:Administration, Oral; D006801:Humans; D007071:Immunoglobulin A, Secretory / Q000032:analysis; D007252:Influenza Vaccines / Q000008:administration & dosage*; D009297:Nasal Mucosa / Q000276:immunology / Q000378:metabolism
chemical_list: D007071:Immunoglobulin A, Secretory; D007252:Influenza Vaccines