[Study of the B-group vitamin content of maternal serum, cord-placental serum and placenta].
D005260:Female; D005492:Folic Acid; D006801:Humans; D008431:Maternal-Fetal Exchange; D010920:Placenta; D011247:Pregnancy; D014803:Vitamin B Complex; D014815:Vitamins
D014815:Vitamins; D014803:Vitamin B Complex; D005492:Folic Acid
MATERNAL-FETAL EXCHANGE; VITAMIN B COMPLEX