The foetus is surrounded by a protective amniotic sac filled with fluid.

The AFV was obtained subtracting the embryonic volume from the amniotic sac volume.

OH was done by puncture of the amniotic sac.

Then, in the presence of the three visiting physicians, a sixth amniotic sac was delivered with its fetus.

The amniotic sac is leaking.

The embryo floats in the amniotic sac, a body of fluids chemically resembling the sea water from which we came.

The 23-year-old was born with amniotic band syndrome, as his mother's amniotic sac entangled his wrist while developing in the womb.

Denver Zoo's female tapir Rinny gave birth last month but was unable to break the amniotic sac, at which point staff stepped in.

Punctures were created at midgestational day 23 by 14-gauge needle fetoscopy on surgically exposed rabbit amniotic sacs.