SF herbal industry draws new scrutiny
San Francisco Department of Public Health inspectors are still trying to trace the origin of a potentially deadly ingredient found in tea leaves sold at a medicinal shop in Chinatown. Tara Moriarty reports.
San Francisco Department of Public Health inspectors are still trying to trace the origin of a potentially deadly ingredient found in tea leaves sold at a medicinal shop in Chinatown. Tara Moriarty reports.