One of the important advantages of using serially sub cultivated cells to produce biotechnological/biological products is the ability to have a characterized common starting source for each production lot, i.e., the preserved bank of cells, native and improved microbial host strains and expression vectors. NRGCBIO will prepare their own cell banks and also will source it from National, International repositories, and R&D institutions. Our facility is responsible for ensuring the quality of each cell bank and of the testing performed on each bank.