Thursday, April 2, 2015

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Denise Grady uurib New York Times is, kui ohtlikuks tuleks pidada paljude plastiktoodete koostisesse kuuluvat kemikaali bisfenool-A (BPA), mida satub erinevates kogustes praegu milar sisuliselt milar iga inimese organismi. The mountains of data produced so far show conflicting results as to whether BPA is dangerous, in part because different laboratories have studied the chemical in different ways. Animal strains, doses, methods of exposure and the results being measured — as crude as body weight or as delicate as gene expression in the brain — have all varied, making it difficult or impossible to reconcile the findings. In science, no experiment is taken seriously unless other researchers can reproduce it, and difficulties in matching BPA studies have led to fireworks.
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