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By contrast , ovarian tumors displayed significantly higher levels of hCAP - 18 / LL - 37 where expression was observed in tumor and stromal cells .
 ovarian tumors, tumor, stromal cells
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 ovarian tumors, tumor, stromal cells