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CMV UL146 and CMV UL147

Cytomegalovirus (CMV), a member of the beta herpesvirus subfamily, typically causes subclinical or latent infections in the normal adult population. However, CMV can cause congenital disease during pregnancy and is a human opportunistic pathogen that affects immunocompromised individuals. Virulent CMV clinical isolates have also been shown to carry at least 19 genes, designated UL133 - UL151, that are not found in laboratory strains that have lost virulence characteristics. Two of these genes, UL146 and UL147, exhibit sequence similarity to CXC chemokines.