the glycine/serine ratio of the amniotic fluid of the last trimester of pregnancies with a fetus affected with nkh was higher ( 8.5 +/- 3.3 ; mean +/- sd ) than in pregnancies of nkh-heterozygote mothers with a healthy fetus ( 4.1 +/- 1.7 ) or than in pregnancies of healthy mothers ( 4.3 +/- 1.5 ) .
C0032981
last trimester
C0032961
pregnancies