11.   But because the images are derived from sonograms, where the fetus is seen floating in amniotic fluid, the resulting works take on a dreamlike quality.

12.   But the needle required to draw cells from the amniotic fluid can introduce HIV into the fetus.

13.   Fetal lungs secrete liquid that makes up the amniotic fluid, along with urine.

14.   For this, amniotic fluid can be drawn and its DNA analyzed.

15.   He showed that when the lungs were fully developed, the ratio of two fatty substances in the amniotic fluid changed.

16.   However, he canceled the attempt because ultrasound pictures showed the needle would have to pierce the placenta before extracting any amniotic fluid.

17.   In addition, tars, nicotine and other chemical deposits become integrated into the amniotic fluid.

18.   In testing, about three tablespoons of amniotic fluid with discarded fetal cells are withdrawn from the uterus, cultured in the lab and inspected for abnormalities.

19.   It showed up in the amniotic fluid.

20.   Just then, the bag of water that cushions the fetus broke, and amniotic fluid began leaking onto the floor.