In testing the effects of the controversial chemical bisphenol A (BPA) on zebrafish, UW-Milwaukee scientist Daniel Weber found himself in familiar territory.
The results he observed were similar to those he'd seen when exposing the fish to mercury during their early development -- profound behavioral changes occurred not only immediately after hatching, but also in adulthood.
Like developmental exposure to mercury, adult fish that had been exposed to tiny amounts of BPA as embryos had learning and memory problems, compared to fish that had not been exposed.
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