7325
In all eight cases , neither FL nor DLL cells showed alterations of bcl - 2 gene sequences in the breakpoint region , suggesting high conservation of the bcl - 2 gene during both t ( 14 ; 18 ) translocation and morphologic transformation of the FL cells .
 bcl - 2 gene sequences, bcl - 2 gene
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 bcl - 2 gene sequences, bcl - 2 gene