2515
The findings in the human multiple myeloma cell lines represent the first examples of B cells with downregulated PU . 1 expression and apparently contradict observations in the murine system in which PU . 1 is expressed and active in plasmacytoma cell lines .
 GENE: PU . 1; GENE: PU . 1
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: PU . 1; GENE: PU . 1