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Surprisingly , despite the expression of KSHV latent genes in the vast majority of tumor cells , specifically targeting only the few vGPCR - expressing cells in established tumors resulted in tumor regression .
 Anatomy: tumor cells; Anatomy: cells; Anatomy: 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: tumor cells; Anatomy: cells; Anatomy: tumors; Anatomy: tumor