Cidofovir.
D017088:AIDS-Related Opportunistic Infections / Q000188:drug therapy*; D000998:Antiviral Agents / Q000627:therapeutic use*; D018791:CD4 Lymphocyte Count; D000077404:Cidofovir; D003596:Cytosine / Q000031:analogs & derivatives* / Q000627:therapeutic use*; D006801:Humans; D007968:Leukoencephalopathy, Progressive Multifocal / Q000188:drug therapy*; D063065:Organophosphonates; D009943:Organophosphorus Compounds / Q000627:therapeutic use*
D000998:Antiviral Agents; D063065:Organophosphonates; D009943:Organophosphorus Compounds; D003596:Cytosine; D000077404:Cidofovir