1700
In comparison with the 16 introns reported in AHA3 , AHA2 is missing one intron in the 5 ' - untranslated region and a second intron in the C - terminal coding region .
 AHA3, AHA2
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 AHA3, AHA2