CD4-Positive T-Lymphocytes/immunology; CD4-Positive T-Lymphocytes/virology; Cytomegalovirus Infections/immunology; Cytomegalovirus/immunology; Epitopes/immunology; HLA-DP Antigens/immunology; HLA-DR7 Antigen/immunology; Viral Envelope Proteins/immunology; Amino Acid Sequence; Antigen Presentation; B-Lymphocytes/immunology; B-Lymphocytes/pathology; B-Lymphocytes/virology; CD4-Positive T-Lymphocytes/pathology; CD8-Positive T-Lymphocytes/immunology; CD8-Positive T-Lymphocytes/pathology; CD8-Positive T-Lymphocytes/virology; Chronic Disease; Clone Cells; Coculture Techniques; Cytomegalovirus/chemistry; Cytomegalovirus/isolation & purification; Cytomegalovirus Infections/genetics; Cytomegalovirus Infections/pathology; Cytomegalovirus Infections/virology; Dendritic Cells/immunology; Dendritic Cells/pathology; Dendritic Cells/virology; Epitopes/genetics; Escherichia coli/genetics; HLA-DP Antigens/genetics; HLA-DR7 Antigen/genetics; Herpesvirus 4, Human/genetics; Herpesvirus 4, Human/immunology; Humans; Molecular Sequence Data; Oligopeptides/genetics; Oligopeptides/immunology; Primary Cell Culture; Recombinant Proteins/genetics; Recombinant Proteins/immunology; T-Lymphocytes, Cytotoxic/immunology; T-Lymphocytes, Cytotoxic/pathology; T-Lymphocytes, Cytotoxic/virology; Viral Envelope Proteins/genetics