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Eye'm Still Here
21 July 2018

Eye'm Still Here

All around the world, humans are at risk from outbreaks of viruses such as Ebola and Zika. In order to understand more about how these infections spread, researchers want to know whether the viruses can lie dormant in the body, becoming reactivated and causing disease at a later date. To find out, they’re studying a harmless but widespread virus known as cytomegalovirus (CMV), which infects up to 90 per cent of the population but doesn’t cause any symptoms in healthy people. It turns out that CMV (red) lurks amongst the blood vessels (green) in the iris of the eye – an organ that's usually resistant to viral attack – and can be reactivated more than two months after the initial infection. Not only does this suggest that CMV infection could be responsible for causing eye problems, but it also reveals a potential hiding place for more deadly viruses.

Written by Kat Arney

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BPoD stands for Biomedical Picture of the Day. Managed by the MRC Laboratory of Medical Sciences until Jul 2023, it is now run independently by a dedicated team of scientists and writers. The website aims to engage everyone, young and old, in the wonders of biology, and its influence on medicine. The ever-growing archive of more than 4000 research images documents over a decade of progress. Explore the collection and see what you discover. Images are kindly provided for inclusion on this website through the generosity of scientists across the globe.

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