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Ritodrine significantly altered the expression of genes related to steroid and lipid metabolism , as well as the metabolism of ritodrine itself .
 Chemical: Ritodrine; Chemical: steroid; Chemical: ritodrine
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: Ritodrine; Chemical: steroid; Chemical: ritodrine