Maternal age and foetal oxygenation.
D019069:Cell Respiration; D005312:Fetal Blood; D005333:Fetus / Q000097:blood*; D008423:Maternal Age; D010100:Oxygen / Q000097:blood*; D011247:Pregnancy / Q000502:physiology; D012119:Respiration
D010100:Oxygen
FETUS/blood in; OXYGEN/in blood; PREGNANCY/physiology