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As reported previously ( Namba et al . , 1985 ; Namba , 1985 ) , normal human fibroblasts were transformed into immortal cells with abnormal karyotypes by Co - 60 gamma - ray irradiation .
 Anatomy: fibroblasts; Anatomy: immortal cells
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: fibroblasts; Anatomy: immortal cells