The capsid protein of feline calicivirus (PCV) was expressed by using plasm
ids containing cytomegalovirus, simian virus 40, or T7 promoters. The stron
gest expression was achieved with the T7 promoter and coinfection with vacc
inia virus expressing the T7 RNA polymerase (MVA/T7pol), The FCV precursor
capsid protein was processed to the mature-size protein, and these proteins
were assembled in to virus-like particles.