Human cytomegalovirus (HCMV) is classified as a DNA herpesvirus. A recent study showed that the HCMV virion contains not only DNA, but also four species of mRNA, indicating that this virus is more ...

Samples with known or suspected UL97 mutations also were sequenced for evidence of mutations in the CMV polymerase gene UL54. No ganciclovir resistance mutations were observed in the UL54 gene.