Objective To establish a procedure for suspension culture of MDCK-siat7 e cells in serum-and protein-free medium BD001 from non-animal origin, and provide a basis for large-scale culture of MDCK-siat7 e cells and preparation of viral vaccines. Methods A master cell bank for MDCK-siat7 e cells derived from BD001 and serum-free cryopreservation solution was established and subjected to routine control tests, while the cells were observed for growth status. The time for formation of platform period as well as ...