TH FOTO-WERBUNG / SCIENCE PHOTO LIBRARY TH FOTO-WERBUNG / SCIENCE PHOTO LIBRARY
Echinacea herb. Cut and dried parts of the purple coneflower plant, Echinacea purpurea. This native plant of North America was used by the indigenous Indians as a herbal medicine to treat burns and wounds, and prevent infection. The leaves and roots are said to contain an immunostimulant, an agent that causes the formation of the body's antibodies.
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