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Transformation of mammary epithelial cells ( MECs ) from the normal to the neoplastic stage requires the dysregulation of tumor suppressor genes and proto - oncogenes .
 Anatomy: mammary epithelial cells; Anatomy: MECs; Anatomy: neoplastic; 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: mammary epithelial cells; Anatomy: MECs; Anatomy: neoplastic; Anatomy: tumor