 All these non-structural proteins have several functions, including the organization of viral RNA synthesis and helping the virus to infect rodent cells by escaping host innate immunity (see "The mechanism of viral immunosuppression in natural hosts" section above).It has also been found that C protein facilitates budding of virus-like particles and small amounts of C protein are associated with a viral capsid.The genomes of non segmented negative-stranded RNA viruses (including paramyxoviruses) have a low rate of homologous recombination and evolve comparatively slowly.