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Transformation of BHK hamster fibroblasts by an env - strain of Rous sarcoma virus ( RSV ) leads to the appearance at the cell surface of a virus - induced nonvirion antigen ( VCSA ) , specific for transformation , whose expression is controlled by the transforming src gene .
 Anatomy: BHK hamster fibroblasts; Anatomy: cell surface
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: BHK hamster fibroblasts; Anatomy: cell surface