I mean, biological contamination of this environment is simply illegal at this point, and we don't have the right to ignore that.

I'm dead worried about biological or chemical contamination from that side.

Why the hell hadn't some genius designed a field test he could perform to check for biological contamination?

Ask the service provider to show you any mold or other biological contamination they say exists.

The British team has spent 16 years developing the technology to explore the lake using methods that will not lead to chemical or biological contamination.

Tanaka makes his way through the headquarters building, unaware that he is the source of the biological contamination.

"We haven't found any evidence of biological contamination, but we can't afford to take chances."

Does it sound like chemical or biological contamination?

"This supports your idea that it was biological contamination."

What does biological contamination have to do with all this psychic stuff, anyway?