| Antiviral | EC50 ratio | Phenotype | Strain | Source | Marker | Assay | Reference |
|---|---|---|---|---|---|---|---|
| Ganciclovir | 2.30 | Low level resistance | Laboratory strain, Clinical Isolate | Recombinant | Details | Generation and characterization of a GCV resistant HCMV UL97-mutation and a drug sensitive UL54-mutation. (Dec 2013) |