4340
Analysis of deletion and substitution mutations in the MER2 5 ' exon demonstrates that the unusually large size of this exon plays an important role in splicing regulation .
 GENE: MER2 5 ' exon
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: MER2 5 ' exon