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We investigated the presence of COUP - TFII in human colorectal cancer tissues and adjacent normal tissues from 95 primary colorectal cancer patients by immunohistochemistry .
 colorectal cancer tissues, tissues, primary colorectal cancer
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 colorectal cancer tissues, tissues, primary colorectal cancer