2720
Six weeks later , mice were randomly divided into four treatment groups : untreated controls ; 10 minute daily TEMF ; 200 cGy of IR every other day ( total 800 cGy ) ; IR plus daily TEMF .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
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