Sheldon Whitehouse actually said...
And the reason that that acute toxicity is not showing up in your field studies is because the concentration that you are testing at is below the level that would cause it, or is it because the creatures you are testing are fundamentally or intrinsically more resilient than humans and don't suffer the same injury when exposed to the chemical?
Context
Whitehouse seeks clarification on the discrepancies in toxicity studies.
08/03/2010