We, JCRB Cell Bank, are collecting various human and animal culture cells including cancer and genetically modified cells. Cell resources are distributed to researchers across Japan and around the world. These cells are comprehensively qualified by testing microbial contamination, virus contamination and cross culture contamination. Some cells are characterized by karyotyping and/or cell surface markers. In collaboration with other major cell banks in the world, we are developing methods for cell culturing and quality control in order to support fundamental research on medical of pharmaceutical sciences.