5550
Aldehyde dehydrogenase enzymes also play important roles in embryogenesis and development , neurotransmission , oxidative stress and cancer .
 Chemical: Aldehyde
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: Aldehyde