I don’t often quote the Bible, but I’ll snip a phrase from Matthew 7:7: “Seek and you shall find.” Matthew did not have chemistry in mind, but of course I do. My take is that if you test a chemical with enough doses and endpoints in rodents, you will often find some statistically significant effect. The key question, though, is whether that effect is biologically meaningful and relevant to human exposure. That question repeatedly comes up in discussions of glyphosate, the most widely-used weed killer in the world.

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Montreal Gazette ePaper, an electronic replica of the print edition to view on any device, where you can share and comment..

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