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Taking the MeHg and DHA content of 33 fish species the net effect of these compounds on the IQ score was quantified .
 Chemical: MeHg; Chemical: DHA
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: MeHg; Chemical: DHA