3886
In this study, we examined seven EBV -positive gastric carcinoma tissues for viral gene expression at the mRNA level , from which studies on the EBV oncogenicity in human epithelial cells will benefit.
 cell type: human epithelial cells
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: human epithelial cells 
Answer:
 cell type: human epithelial cells