China Bird Flu Concerns Rise as Herbal Remedies Sell Out

China Bird Flu Concerns Rise as Herbal Remedies Sell Out

Stephen Chernin/Getty Images

A herbalist prepares a concoction of herbs known as ban lan gen. Ban lan gen is the root of a flowering plant known as dyer’s woad or indigo woad, and found in southeastern Europe, central Asia and eastern Siberia.