2867
In the decision - tree model , compounds with IC ( 50 ) values < 22 micro M were categorized as teratogens , whereas compounds in the two groups with IC ( 50 ) values between 22 - 200 micro M and > 200 micro M were categorized as teratogens if >= 8 and 12 genes , respectively , were deregulated by at least 10 % .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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