title: Letter: Maternal smoking and immunity.
mesh_terms: D000906:Antibodies / Q000032:analysis*; D005260:Female; D006801:Humans; D008233:Lymphotoxin-alpha / Q000032:analysis*; D010298:Parity; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000276:immunology*; D012907:Smoking; D014552:Urinary Tract Infections / Q000276:immunology; D014777:Virus Diseases / Q000276:immunology
chemical_list: D000906:Antibodies; D008233:Lymphotoxin-alpha