Professor Wu Yuping says pollutants affect the dolphins' immune systems. Photo: Nora Tam

Polluted Pearl River Estuary is killing pink dolphins, research finds

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Study highlights threat of estuary pollutants, but campaigners say construction is greater danger

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Published: 3:15am, 10 Jan, 2014

Updated: 9:15am, 10 Jan, 2014

Professor Wu Yuping says pollutants affect the dolphins' immune systems. Photo: Nora Tam

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