Fetal blood studies.  VII.  The oxygen pressure gradient between the maternal and fetal bloods of the human in normal and abnormal pregnancy.
D005190:Family; D005312:Fetal Blood; D005333:Fetus / Q000097:blood*; D010100:Oxygen; D011247:Pregnancy / Q000097:blood; D011312:Pressure
D010100:Oxygen
FETUS/blood in; PREGNANCY/blood in