title: Pneumococcal antibodies in IgA of serum and external secretions.
mesh_terms: D000328:Adult; D000906:Antibodies / Q000032:analysis*; D001665:Binding Sites; D003126:Colostrum / Q000276:immunology*; D005455:Fluorescent Antibody Technique; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis*; D007136:Immunoglobulins / Q000032:analysis; D009297:Nasal Mucosa / Q000378:metabolism*; D012463:Saliva / Q000276:immunology*; D013045:Species Specificity; D013296:Streptococcus pneumoniae / Q000276:immunology*
chemical_list: D000906:Antibodies; D007074:Immunoglobulin G; D007136:Immunoglobulins