an epstein-barr virus ( ebv ) -negative lymphoblastoid cell line ( lcl ) , bja-b , was established from an african burkitt 's lymphoma ( bl ) which contained no detectable ebv dna and did not express the ebv specified antigen ebna , bja-b cells grow in typically large , flat clumps .
C0343640
african burkitt 's lymphoma
C0004561
b