Primary B lymphocytes from adenoids express BCRF1 early after infection with B95.8 virus as determined by RT-PCR with BCRF1-specific primers (+RT). Total cellular RNA preparations from nasal polyps of two different donors (NP1 and NP2) were used. No PCR amplification product could be detected when reverse transcriptase was omitted, as shown in lanes labeled −RT, as a negative control. M indicates the 123-bp ladder as a molecular weight marker.