title: Immunoglobulin deficiency and recurrent upper respiratory tract infections.
mesh_terms: D002648:Child; D006801:Humans; D007116:Immunization, Passive; D007136:Immunoglobulins / Q000172:deficiency*; D008297:Male; D012008:Recurrence; D012141:Respiratory Tract Infections / Q000276:immunology*
chemical_list: D007136:Immunoglobulins