EBER variations in NPC cases (A) and healthy donors (B) from NPC non-endemic area in China.

<p>Numbers in the second top correspond to the nucleotide positions under which the B95-8 prototype nucleotide sequence is listed. Only nucleotides different from B95-8 are indicated. The changes in coding regions of EBER1 and EBER2 and non-coding region between EBER1 and EBER2 are separated by double lines and the positions are shown in the top. Different variants are noted to the left column, while the isolates showing identical sequences in each population group are listed by a representative isolate in the second column. The followed numbers in the parentheses denote the amount of the identical sequences from the same population group. The consensus sequence of each variant is shaded.