The fetus and cigarette smoke.
D019794:2,3-Diphosphoglycerate; D002263:Carboxyhemoglobin / Q000032:analysis*; D004163:Diphosphoglyceric Acids / Q000097:blood*; D005260:Female; D005312:Fetal Blood / Q000032:analysis*; D006454:Hemoglobins / Q000032:analysis*; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D012907:Smoking
D004163:Diphosphoglyceric Acids; D006454:Hemoglobins; D019794:2,3-Diphosphoglycerate; D002263:Carboxyhemoglobin