FIG. 3.

Further analysis of EBNA3A gene type using new common 5′ and 3′ primers and probing with a new type 1-specific probe or with a new type 2-specific probe compared to using the standard common primers and common probe at this locus. Note that of the two isolates which could not be typed at EBNA3A by the standard protocol, C18 was identified as type 2 and NPC 13 as type 1 (but with a smaller PCR product). Parallel results are shown for the reference B95.8 (type 1) and AG876 (type 2) viruses and for standard Chinese type 1 (C14 and C15) and type 2 (C19 and C20) isolates.