high antibody titres against epstein-barr virus ( ebv ) -specific virus capsid antigen , nuclear antigen and the r component of the ebv-early-antigen-complex as well as the approximately 27 ebv genome equivalents per tumour cell , demonstrated by dna-dna hybridisation , characterised the tumour as true burkitt lymphoma which is observed extremely seldom outside africa .
C0003320
antigen
C0069115
nuclear antigen