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The collection of human tissue samples (cells and bodily fluids) in tissue banks has sparked a vivid discussion both among the lay public and the biomedical community. This special issue of Pathobiology brings together expert opinions about the legal, ethical, epidemiological and biomedical aspects of tissue banking. It presents the views of patients/donors and researchers on how best to proceed with tissue banks in an international context, and describes several European experiences in detail. Concise and up-to-date, it is recommended reading to all who wish to find out more about tissue banks.