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With a p53 - null cell line ( EU - 4 ) , although doxorubicin treatment arrested cells in G ( 2 ) / M , survivin expression was unchanged , and cells underwent only limited apoptosis .
 Anatomy: p53 - null cell line; Anatomy: EU - 4 ); Anatomy: cells; Anatomy: 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: p53 - null cell line; Anatomy: EU - 4 ); Anatomy: cells; Anatomy: cells