"But we have also an alien organism in our body politic, one that the state here, as there, seems unable to control."

The doctor's just saved the crew from an epidemic of alien organisms.

Therefore, they were dealing with an entirely alien organism.

The alien organism was judged to be among the most primitive forms of life ever discovered.

The first time, I was only an alien organism, along with other alien organisms, that it wanted to have a look at.

Someone very powerful has gone to a great deal of trouble to import this alien organism and test it.

The impact of the alien organism on her mind.

Our purpose is to remove alien organisms that have illegally been introduced into the planetary environment.

The planet had attracted her because of the alien organisms filling its ocean.

You have all been exposed to the alien organism.