1594
Five T-cell clones specific for a T-cell epitope located at the carboxyterminal region of HBxAg were established and found to belong to the CD2/CD4-positive, CD8-negative subtype .
 cell line: T-cell clones; protein: carboxyterminal region; protein: T-cell epitope; protein: HBxAg; cell line: CD2/CD4-positive, CD8-negative subtype
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 cell line: T-cell clones; protein: carboxyterminal region; protein: T-cell epitope; protein: HBxAg; cell line: CD2/CD4-positive, CD8-negative subtype