title: Serum immunoglobulin M levels between weeks 22 and 37 of gestation.
mesh_terms: D001724:Birth Weight; D005260:Female; D005333:Fetus; D005865:Gestational Age; D006801:Humans; D007136:Immunoglobulins / Q000032:analysis*; D007231:Infant, Newborn; D007234:Infant, Premature; D011247:Pregnancy; D014470:Umbilical Cord
chemical_list: D007136:Immunoglobulins