5534
The centromeric YAC contig , which consists of 23 overlapping YACs and orders 19 sequence - tagged sites ( STSs ) , covers a minimum of 2 . 2 Mb and spans the Ewing sarcoma breakpoint . c - ets 1 and Fli - 1 , two members of the ets family , have been linked within 400 kb of intervening DNA within this contig , which also comprises a polymorphic microsatellite , D11S912 ( CA ) n , which we have localized within the Fli - 1 gene .
 c - ets 1, Fli - 1, ets family, D11S912, Fli - 1 gene
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 c - ets 1, Fli - 1, ets family, D11S912, Fli - 1 gene