Scientists are exploring every possible option when it comes to the development of COVID-19 treatments. A potential therapeutic could be found in Single-domain Variable New Antigen Receptors (VNARs) derived from the immune system of sharks. These unique, antibody-like proteins are the smallest naturally occurring binding domains found in nature. New research suggests that they can prevent variants of SARS-CoV-2, and related coronaviruses, from infecting human cells.

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