Demons were introduced in his body and he became essentially immortal.

Celice tells her students that whereas single-celled organisms, dividing again and again, are essentially immortal, "death is the price we pay for being multi-celled."

In the Human Genome Diversity Project, by contrast, white blood cells from a sample were made essentially immortal before storage.

Essentially immortal and unstoppable, they had become known as the Titans, but after a century had been overthrown themselves by Omnius and made his servants.

This process repeats, thus making the bacterium colony essentially immortal.

"I agree ... but I thought all members of the Remillard family were essentially immortal."

The plan presented difficulties-never mind that no one expected Slarfarer's first expedition to last more than a few years; the starship itself should be essentially immortal.

The branches get all the fuss," Healy says, "but they're essentially immortal.

Because of the way that Dungeons & Dragons handles regeneration, the wearer is essentially immortal.

When she went in for a routine biopsy, the doctors discovered a tumor with most unusual cell activity: they were essentially immortal.