16852
Finally , the stemness properties of a few cancer cells as well as components of the tumor stroma , like fibroblasts and tumor - associated macrophages but also hypoxia , also help tumor to resist to anticancer agents .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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