InsectGO™ SF9/SF21 Medium is a serum-free insect cell culture medium. This Medium is optimized for the growth and maintenance of Spodoptera frugiperda (Sf9 and Sf21) cells and for large-scale production of recombinant proteins expressed using the baculovirus expression vector system (BEVS). InsectGO™ SF9/SF21 Medium is suitable for suspension and monolayer culture methods and supports growth of other lepidopteran cell lines.