title: Development of immunity in children.
mesh_terms: D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005260:Female; D005333:Fetus / Q000276:immunology; D006801:Humans; D007109:Immunity; D007136:Immunoglobulins / Q000032:analysis; D007223:Infant; D007231:Infant, Newborn; D008214:Lymphocytes / Q000276:immunology; D011247:Pregnancy
chemical_list: D007136:Immunoglobulins