Babies grow up inside the amniotic fluid in the womb.

They think you're vegetables simmering in a jelly sac.

And my SAC in El Paso sends me home.

They say amniotic fluid has roughly the same composition as sea water.

Instruct SAC to send a plane... on a training mission over Evans City.

And one day I was exploring this cul de sac hidden away a few streets away.

A silk gland kind of looks like a sac with a lot of silk proteins stuck inside.

The flavors of the food a pregnant woman eats find their way into the amniotic fluid, which is continuously swallowed by the fetus.

His flesh fuses with her flesh, her bloodstream grows into his body, and he becomes nothing more than a little sperm sac.

let's start at the one o'clock position, there's tubuliform silk glands, which are used to make the outer silk of an egg sac.

Well, at the same time the heart is growing, you also have a sac, almost like a balloon. This balloon begins to envelope the heart.

And we're working a lot with the stem cells that we published on two years ago, stem cells from the amniotic fluid, and the placenta, which have those properties.

Because sounds from the outside world have to travel through the mother's abdominal tissue and through the amniotic fluid that surrounds the fetus, the voices fetuses hear, starting around the fourth month of gestation, are muted and muffled.

And as a result it's a very tolerant community, which is different, I think, than something like this, which is in Schaumburg, illinois, where every little set of houses has their own cul de sac and drive through Starbucks and stuff like that.