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This in vitro transformation process involves multiple steps : slow - growing ' pre - neoplastic ' epithelial foci are induced 70 - 100 days after MNU treatment and from such foci rapidly proliferating immortal cell lines were established , some of which became tumorigenic after a further latent period .
 Anatomy: ' pre - neoplastic ' epithelial foci; Anatomy: foci; Anatomy: cell lines
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: ' pre - neoplastic ' epithelial foci; Anatomy: foci; Anatomy: cell lines