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The nonspecific character of these pathways led us to hypothesize that circulating cancer cells use similar mechanisms , promoting secondary tumor formation at distal sites .
 Anatomy: cancer cells; Anatomy: secondary tumor; Anatomy: distal sites
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Anatomy: cancer cells; Anatomy: secondary tumor; Anatomy: distal sites