8538
Mammalian ALDH1B1 , another mitochondrial enzyme sharing 72 % identity with ALDH2 , is also capable of metabolizing acetaldehyde but has a tissue distribution and pattern of activity distinct from that of ALDH2 .
 Chemical: acetaldehyde
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: acetaldehyde