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The study shows that clear cell tumors are able to up - regulate angiogenic growth factor receptors more efficiently than chromophil ( papillary ) , that clear cell tumors can use pathways independent of VHL to regulate angiogenesis , and that this combined regulation may account for their more aggressive phenotype , which suggests that targeting VEGFR1 ( flt - l ) may be particularly effective in these tumor types .
 Anatomy: clear cell tumors; Anatomy: chromophil; Anatomy: papillary; Anatomy: clear cell tumors; Anatomy: tumor
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: clear cell tumors; Anatomy: chromophil; Anatomy: papillary; Anatomy: clear cell tumors; Anatomy: tumor