But we washed to clear away bacteria and other one-celled creatures.

The underlying premise, borrowed from Slonczewski's 1998 novel "The Children Star," is immediately appealing: sentient one-celled creatures called micros can exist symbiotically within human skulls.

It's a puzzle, then, why our ancestors - those one-celled creatures thriving in ancient seas - ever bothered to try it.

Later they emit a one-celled creature that looks like a grappling hook and enters the fish.

Though yeasts are one-celled creatures, they are part of a vast group known as the eukaryotes, one of the three so-called domains into which all living organisms are divided.

What if you were a one-celled creature-" "I know what you're going to say, Janov.

In Sickbay's lab, McCoy was parading a pictured series of one-celled creatures.

FOR billions of years evolution was stuck in a rut, with algae, bacteria and other one-celled creatures holding dominion over the seas.

It looked, Gail thought, like one of the one-celled creatures with a flagellum that she vaguely remembered from school biology software.

There are some one-celled creatures that have the properties of both plants and animals.