1593
Most were located in the carboxyterminal half of the HBxAg protein .
 protein: carboxyterminal half; protein: HBxAg; protein: HBxAg protein
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:
 protein: carboxyterminal half; protein: HBxAg; protein: HBxAg protein