Nanobodies are tiny anti-bodies, which are a part of immune system that protects the body against antigens (foreign bodies). They are a special type of anti-bodies produced by the Camelid animals such as camels, llamas, alpacas, etc. They weigh just a tenth of the weight of a human anti-body. They have the advantage of being more stable, cheaper and easier to engineer. Recently, nanobodies with potential action against SARS CoV 2 were isolated from a llama named Cormac.

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