3428
Earlier published data , indicating Sp1 binding to the R1 alpha / beta regions , could not be confirmed , suggesting that the R1 initiator element may function independent of Sp1 .
 GENE: Sp1; GENE: R1 alpha / beta regions; GENE: Sp1
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: Sp1; GENE: R1 alpha / beta regions; GENE: Sp1