title: Down's syndrome and immunoglobulins.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002674:Child, Institutionalized; D002675:Child, Preschool; D004314:Down Syndrome / Q000276:immunology*; D006801:Humans; D005779:Immunodiffusion; D007070:Immunoglobulin A / Q000032:analysis*; D007074:Immunoglobulin G / Q000032:analysis*; D007075:Immunoglobulin M / Q000032:analysis*
chemical_list: D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M