This invention provides a recombinant adenovirus expression vector characterized by the partial or total deletion of the adenoviral protein IX DNA and having a gene encoding a foreign protein or a functional fragment or mutant thereof. Each of the wirings includes: an internal electrode disposed on a surface with the imaging element mounted thereon; an external electrode disposed on a rear surface of the imaging-element mounted surface and at a position corresponding to the internal electrode and an end face electrode disposed on an end face of the substrate, for connecting the internal electrode and the external electrode. An insulative spacer is positioned in the housing. Novel complexes and catalyst systems useful in the polymerization method are also provided.