Prevention of birth defects.
D000649:Amniocentesis; D000013:Congenital Abnormalities / Q000517:prevention & control*; D004314:Down Syndrome / Q000175:diagnosis; D005260:Female; D005817:Genetic Counseling; D006801:Humans; D009436:Neural Tube Defects / Q000175:diagnosis; D011247:Pregnancy; D012306:Risk; D012732:Sex Determination Analysis; D000509:alpha-Fetoproteins / Q000378:metabolism
D000509:alpha-Fetoproteins