title: Duodenal immunoglobulin levels in the first two years of life.
mesh_terms: D004386:Duodenum / Q000276:immunology*; D006801:Humans; D007070:Immunoglobulin A / Q000032:analysis; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D007136:Immunoglobulins / Q000032:analysis*; D007239:Infections; D007419:Intestinal Secretions / Q000032:analysis / Q000276:immunology*; D013223:Statistics as Topic; D013997:Time Factors
chemical_list: D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D007136:Immunoglobulins