The mission of the Louisville Cooperative Tissue Biorepository is to appropriately collect normal and abnormal tissues that are removed from the human body as a part of standard medical and surgical practice after adequate portions are secured by surgical pathologists to allow for correct diagnoses to be made. The LCTB securely stores appropriately collected human samples for research purposes and appropriately allocates these samples to local investigators for research purposes. The LCTB team appropriately documents all points in the process of obtaining informed consent, collection, storage, and allocation of tissues.