It is during gastrulation that the cells leave the outer surface and move inside the region where they will form the gut.

Perhaps there would be something to salvage, though he had never yet found home-use solar cells with any life left at all.

Whether there are any cancer cells left after surgery.

But he called Max's cell, too, left the same message.

Before the surgery, the doctors knew there were some tumor cells left in the child's marrow.

The cells stood off to their right and left, buried in the dark.

Individual cells were motile and often left the field, but the clusters remained intact.

They also say the new cells leave them vulnerable to torture by prison officials.

"I don't have nearly that many brain cells left."

I'm going to get off this crazy planet while I still have a few brain cells left!