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Taken together , our studies , based on a molecular imaging approach for semiquantitative detection of micrometastases , point to an important role of tumor lymphatics in the metastatic process of human prostate cancer .
 tumor lymphatics, prostate cancer
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 tumor lymphatics, prostate cancer