Recombinant adenovirus (Adenovirus), a replication-defective adenoviral vector system, is widely used for gene delivery in most cell types. The adenoviral vectors provided by Genemedi are based on human adenovirus type 5 (Ad5), which is replication-incompetent (-E1/-E3) and can’t be integrated into host genome, guaranteeing the security for subsequent operations. Adenovirus packaging by Genemedi shows almost 100% gene delivery in most cell types in the recombinant protein expression system both in vivo and in vitro. Recombinant protein expression of interest is detectable from 24 hours post infection. Genemedi has launched a comprehensive adenovirus production service, including a variety of different adenoviral expression systems used for gene over-expression and shRNA mediated gene down-regulation, which may also allow researchers to produce adenoviruses by themselves as they need.