854
Lt-4 detected 40 kd tax1 antigen molecules in most HTLV-I -bearing cell lines except one cell line that expressed 39 kd tax1 antigen .
 protein: 39 kd tax1 antigen; protein: Lt-4; protein: tax1; protein: tax1; cell line: HTLV-I -bearing cell lines; protein: tax1 antigen molecules
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: 39 kd tax1 antigen; protein: Lt-4; protein: tax1; protein: tax1; cell line: HTLV-I -bearing cell lines; protein: tax1 antigen molecules