A rare Chilean tree holds hope for COVID-19 vaccines, in Casablanca
A worker walks among quillay trees, or Soapbark trees (Quillaja saponaria), which are native to Chile and contain a substance that can be used in coronavirus disease (COVID-19) vaccines, at a nursery operated by U.S.-based Desert King International, in Casablanca, Chile April 20, 2021. Picture taken April 20, 2021. REUTERS/Tamara Merino
