We looked for poison in those cigarettes, and there wasn't any!

No chance to go back and check for poison, or the kind of drug that could trigger a heart attack.

All we know is that he had been reaching for different poisons.

Every test for poison had been run, even the exotics.

I can test for metallic poisons, that sort of thing.

In his own world, the tribune would have taken all that as a metaphor for poison.

And of course they didn't have laboratories with which to test for poison.

Nine out of ten murderesses go for poison in one form or another.

"We have a safety system that checks for poisons," he said.

"In which case we'd better take Acorna along to check for poison."