2624
A new exon containing a highly basic region (4c) was characterized, between exons 4 and 5 .
 exon, between exons 4 and 5
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 exon, between exons 4 and 5