Coronavirus vaccine: Is Chilean tree bark a key ingredient?

The quillaja tree, which grows in the Chilean Andes, has traditionally been used by the Mapuche to treat colds and inflammation. But it could play a significant role in a vaccine for the novel coronavirus.

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The quillaja tree, which grows in the Chilean Andes, has traditionally been used by the Mapuche to treat colds and inflammation. But it could play a significant role in a vaccine for the novel coronavirus.