It was all a game, even something as momentous as alien microbes, a game, new and fascinating.

Whereas in the alien microbe, they're only on the outside.

The alien microbes achieved a rudimentary kind of sentience.

It is not likely, Mr. Neelix, that alien microbes would even recognize any of the three of us as food.

It's been sitting there for millions of years, so any alien microbes would have dispersed long ago.

"The committee did feel that the hypothesis that this, ah, Venus particle might be an alien microbe is perhaps a bit premature."

These alien microbes were the last nail in the coffin of the dinosaurs.

Some scientists say that Mars, despite its deserts and hostile surface, may ultimately be found to harbor regions aswarm with alien microbes.

She had been studying alien microbes under a high-powered microviewer for the last several hours.

With his helmet off, he'd been exposed to local air for hours--plenty of time to get infected by an alien microbe and go delirious.