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Scientists are focusing on narwhals because they have almost the same number of “binding sites” as humans. These binding sites are found on ACE2 receptors, proteins on cells throughout the body. ACE2 receptors act as doorways for the coronavirus to enter and infect a range of cells. Humans have 25 of these sites; narwhals have 22. This puts the elusive northern in a high-risk category of animals that could contract the virus, said lead researcher Martin Nweeia, an assistant professor at Case Western Reserve University School of Dental Medicine and an expert on narwhal tusks. “It’s likely that narwhal can bind this virus,” he said. “No one is clear yet as to how many of these binding sites, which ones does it take and what number of viral entities does it take to actually produce COVID-19.” ....
Western Lowland Gorillas Positive for COVID-19 at San Diego Zoo Safari guardianlv.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from guardianlv.com Daily Mail and Mail on Sunday newspapers.