One-hundred and five samples of herbal tea (bags), 72 samples of Brazilian black tea (bags), 11 different types and brands of imported tea (bags) and 21 samples of ready-to-drink tea (200-350 mL cans) were purchased in Brazilian supermarkets and divided into 4 groups: I - Herbal tea; II - Brazilian black tea (Camellia sinensis); III - Imported tea from USA, England, Canada, China, and Japan (Black, green and Oolong tea, all extracted from Camellia sinensis); IV - Ready-to-drink tea-based beverages (black and mate tea). Batch numbers of all types of tea were recorded. http://curezone.com/blogs/m.asp?f=1184&i=142