3884
Transcriptional analysis of Epstein-Barr virus gene expression in EBV-positive gastric carcinoma : unique viral latency in the tumour cells .
 tumour cells
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 tumour cells