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HF plus ethanol significantly reduced mRNA expression of both stearoyl CoA desaturase 1 and fatty acid elongase 5 , but did not have an effect on MCAD or LCAD .
 ethanol, stearoyl CoA, fatty acid
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 ethanol, stearoyl CoA, fatty acid