Chester Zoo chimps help global heart disease research

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Chester Zoo is leading an international study into heart disease among great apes.

Vets at Chester Zoo are working with scientists at Cardiff Metropolitan University to investigate a link between life in captivity and heart disease.

Dylan, a 25-year-old chimpanzee, is one of the apes taking part in the study.

He has gone under general anaesthetic so Chester Zoo vets can do medical tests on his heart.

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